The Jeep Compass may not start in the cold due to potential issues with the battery or fuel system. The Jeep Compass is a reliable and efficient vehicle that excels in various driving conditions.

However, like many cars, the Compass may encounter difficulties starting in cold weather. If you find yourself struggling to get your Jeep Compass running on a chilly morning, there are several potential reasons for this inconvenience. It’s important to note that extreme cold temperatures can adversely affect a vehicle’s performance, and the Compass is no exception.

We will explore some possible causes for why your Jeep Compass won’t start in the cold and provide you with practical solutions to get you back on the road swiftly. So, let’s dive in and uncover the underlying reasons behind this common issue.

why won't jeep compass start in cold

Understanding The Issue

If your Jeep Compass doesn’t start in cold weather, understanding the issue can help you find a solution. Explore common causes such as a weak battery, fuel system problems, or faulty spark plugs. With the right troubleshooting, you’ll be back on the road quickly.

You’re not alone if you’ve ever experienced difficulty starting your Jeep Compass in cold weather. Cold weather can pose unique challenges for engine performance, and it’s important to understand the reasons behind this inconvenience. In this section, we’ll delve into common cold weather starting problems and the symptoms of engine trouble that arise in low temperatures.

Additionally, we’ll explore how cold weather affects battery performance, shedding light on its impact on your vehicle’s ability to start reliably.

Jeep Compass Overview

The Jeep Compass is a popular compact SUV known for its versatility, off-road capabilities, and modern features. It’s essential to comprehend the basics of your vehicle to troubleshoot any potential problems effectively. The Jeep Compass typically relies on an internal combustion engine that requires specific conditions to start correctly.

Also Read: What is tip start on a jeep

Why Won’t Jeep Compass Start In Cold: Common Problems

Jeep Compass, a popular compact SUV known for its off-road capabilities and reliability, occasionally encounters issues that prevent it from starting, particularly in cold weather conditions. The following are the possible reasons Why Won’T My Jeep Compass starts in Cold Weather:

1. Dead Battery

Extremely cold temperatures can affect the chemical reactions inside the battery, leading to a reduced capacity to produce electrical power. As a result, the battery may struggle to provide enough energy to crank the engine and start the vehicle.

What to do

If you suspect a dead battery is causing the starting issue, try jump-starting your Jeep Compass using jumper cables and another vehicle. Consider getting the battery tested at an auto parts store or a mechanic to determine if it needs replacement.

How much it should cost

Jump-starting your vehicle is typically free if you have the necessary equipment. If the battery needs replacement, the cost can range from $100 to $200, depending on the type and brand of the battery.

2. Faulty Starter Motor

The starter motor is responsible for turning the engine when you start your Jeep Compass. In cold weather, the starter motor may encounter increased resistance due to thickened engine oil and other factors, making initiating the engine’s rotation difficult.

What to do

If the starter motor is faulty, you may need to have it inspected and repaired by a qualified mechanic. They will diagnose the issue and either repair or replace the starter motor as necessary.

How much it should cost

The cost of repairing or replacing a starter motor can vary depending on the labor rates and the specific part required. On average, expect to pay anywhere from $300 to $600 for parts and labor.

3. Frozen Fuel Lines

When moisture in the fuel lines freezes, ice blockages prevent fuel flow to the engine. The engine won’t receive the necessary fuel-air mixture to start without an adequate fuel supply.

What to do

To thaw frozen fuel lines, move your Jeep Compass to a warmer location like a heated garage. You can also use a safe heat source, like a hairdryer, to gently warm the fuel lines.

How much it should cost

Thawing frozen fuel lines is a simple procedure you can do yourself, so no additional cost should be involved.

4. Thickened Engine Oil

Cold temperatures cause engine oil to thicken, creating resistance in the engine’s moving parts. Thickened oil makes it harder for the engine to turn over, especially during startup.

What to do

If you suspect the engine oil is too thick for cold weather, consider switching to a lower-viscosity oil or a winter-grade oil recommended for colder temperatures.

How much it should cost

The cost of changing engine oil can vary depending on the type and brand of oil you choose, but it typically ranges from $30 to $70 for the oil and oil filter.

5. Worn Spark Plugs

Spark plugs are crucial in igniting the fuel-air mixture inside the engine’s cylinders. Over time, spark plugs can wear out or become fouled, leading to inefficient ignition and difficulty in starting the engine.

What to do

Have a mechanic inspect the spark plugs and replace any worn-out or damaged ones. They will ensure the new spark plugs are properly gapped and installed.

How much it should cost

The cost of replacing spark plugs depends on the number of cylinders in your Jeep Compass and the type of spark plugs used. On average, it can cost around $100 to $200, including parts and labor.

6. Defective Ignition Switch

The ignition switch sends an electrical current to the starter motor when the key is turned. A faulty ignition switch can disrupt the flow of electricity, preventing the starter motor from engaging.

What to do

If you suspect an issue with the ignition switch, have a professional mechanic diagnose and replace it if necessary.

How much it should cost

The cost of replacing the ignition switch can vary depending on the make and model of your vehicle and the labor rates in your area. On average, it can cost between $150 to $300.

7. Clogged Air Filters

Air filters remove dust and debris from the air entering the engine, ensuring clean airflow. If the air filters are clogged, the engine may not receive enough air, affecting its starting performance.

What to do

Inspect the air filters and replace them if they are dirty or clogged. Air filters are generally easy to access and replace yourself.

How much it should cost

The cost of air filters can range from $10 to $30, depending on the type and brand you choose.

8. Issues with the Fuel Pump

The fuel pump delivers fuel from the tank to the engine. A malfunctioning fuel pump may not provide adequate fuel pressure, making it challenging to start the engine.

What to do

Have a qualified mechanic inspect the fuel pump and replace it if it is malfunctioning or not providing enough fuel pressure.

How much it should cost

The cost of replacing the fuel pump can vary based on the make and model of your Jeep Compass. On average, it can cost between $400 to $800, including parts and labor.

9. Ignition System Problems

The ignition system includes components like the ignition coil and distributor cap, essential for delivering electrical energy to the spark plugs. Issues with these components can lead to starting difficulties.

What to do

If you suspect an issue with the ignition system, have it inspected by a mechanic who can identify the faulty component and repair or replace it accordingly.

How much it should cost

The cost of ignition system repairs can vary depending on the specific issue and the components that need attention. It can range from $100 to $500 or more.

10. Frozen Engine Coolant

When the engine coolant freezes, it can cause the engine’s metal components to contract. This contraction creates resistance, making it harder for the engine to start.

What to do

If the engine coolant is frozen, move your Jeep Compass to a warmer location and allow it to thaw naturally. Do not attempt to start the engine until the coolant has thawed to prevent potential damage.

How much it should cost

Thawing the frozen engine coolant is a simple process that can be done without any additional cost.

Also Read: Why My Jeep Grand Cherokee Won’T Start

Symptoms Of Engine Trouble In Cold Temperatures

  • Rough idle: If your engine is having trouble starting in the cold, you may notice a rough or erratic idle once it does start. This can indicate fuel delivery or ignition issues caused by the cold weather.
  • Stalling: Cold weather can cause engine components to contract, leading to an increased risk of stalling. If your engine shuts off unexpectedly in cold weather, it may be a symptom of underlying issues related to the temperature.
  • Engine misfires: In extremely cold conditions, the engine may misfire, causing a temporary loss of power and potential damage to the engine over time. This can indicate that components like spark plugs or ignition coils are not functioning optimally in the cold.

Impact Of Cold On Battery Performance

  • Reduced battery capacity: Cold temperatures can significantly reduce the overall capacity of your battery, limiting its ability to deliver the necessary power to start the engine.
  • Increased internal resistance: Low temperatures cause the chemical reactions within the battery to slow down, resulting in increased internal resistance. This can further decrease the battery’s ability to provide sufficient power for starting the vehicle.
  • Increased strain on the battery: Starting your vehicle in cold weather requires more power from the battery than in warmer conditions. This additional strain can push an already weakened battery to its limits, resulting in starting difficulties.
What Can I Do to Get My Jeep Compass to Start in Cold Weather

Factors Affecting Cold Weather Starting

The cold winter mornings can be particularly challenging for Jeep Compass owners when it comes to starting their vehicles. Several factors can contribute to difficulties in starting your Jeep Compass in cold weather. Understanding these factors can help you take the necessary precautions to ensure a smoother start even in freezing temperatures.

Battery Capacity And Age

Cold temperatures can significantly impact your Jeep Compass’s battery performance. Here’s why:

  • Lower temperatures reduce the chemical reactions within the battery, leading to reduced electrical output.
  • As the battery ages, its capacity naturally decreases, making it less effective in cold weather.
  • A weakened battery may not generate enough power to start the engine in chilly conditions.

Oil Viscosity And Cold Temperature Ratings

The type of oil you use plays a crucial role in the cold weather starting of your Jeep Compass. Consider the following points:

  • Oil viscosity refers to the oil’s resistance to flow, especially at low temperatures.
  • Lower viscosity oil, such as 5W-30, is ideal for colder climates as it flows more easily, allowing smooth engine starts.
  • Cold temperature ratings on oil containers indicate their performance in low temperatures. Look for oils with lower temperature ratings for improved cold weather starting.

Fuel Quality And Composition

Your Jeep Compass’s fuel composition also affects its ability to start in the cold. Consider these factors:

  • Fuel blends designed specifically for cold weather like winter gasoline can help prevent starting issues.
  • Ethanol content in fuel can absorb water, which can freeze and cause fuel lines problems.
  • Poor quality fuel or contaminated fuel can also hinder cold weather starting, so ensure you are using clean and high-quality fuel.

Understanding the factors that affect cold weather starting in your Jeep Compass can help you troubleshoot any issues and take preventative measures. By ensuring you have a well-charged battery, using the appropriate oil viscosity, and choosing high-quality fuel, you can increase the chances of a successful start even in the coldest winter mornings.

Stay prepared and enjoy a hassle-free driving experience throughout the winter season.

Also Read: Why Won’T My Jeep Cherokee Start

Battery Related Issues

When the temperature drops, you may find yourself in a cold-weather problem with your Jeep Compass: why won’t it start? One of the most common culprits for a no-start situation in chilly conditions is battery-related issues. Let’s explore a few potential reasons and solutions to get your Compass up and running again.

Testing The Battery Charge

  • Use a multimeter: Check the charge of your battery using a multimeter. Ensure the voltage is above 12.4 volts, indicating a fully charged battery.
  • Load testing: Perform a load test on the battery to determine if it has the power to start the vehicle. If the voltage drops significantly when put under load, it may be time for a new battery.

Cleaning Battery Connections

  • Inspect the terminals: Examine the battery terminals for any signs of corrosion or loose connections.
  • Clean the terminals: If corrosion is present, mix a solution of baking soda and water and use a wire brush to scrub away the buildup. Rinse thoroughly with clean water and dry the terminals before reconnection.

Jump-Starting The Vehicle

  • Secure a jump-start kit: Gather a set of jumper cables or a portable jump-starter kit.
  • Connect the cables: Attach the positive (+) and negative (-) cables to the corresponding terminals of both the dead and live batteries.
  • Start the vehicle: Once properly connected, start the donor vehicle and allow it to idle for a few minutes. Then, attempt to start your Jeep Compass.

Remember, always exercise caution when jump-starting a vehicle. Follow these steps carefully to avoid any electrical mishaps. If your Compass still refuses to start after these attempts, it may be time to seek professional assistance. Stay tuned for more troubleshooting tips in our ongoing series on Why Won’t My Jeep Compass Start in the Cold.

Also Read: Why is My Jeep Renegade Not Starting

Fuel System Related Issues

The Jeep Compass not starting in cold weather could be due to fuel system-related issues. If the fuel pump or injectors are not functioning properly, it can prevent the engine from starting in cold temperatures.

Checking Fuel Pump Functionality

The fuel pump plays a critical role in supplying fuel to your Jeep Compass’s engine. The pump’s functionality may be hindered in cold weather, leading to starting problems. Here’s how you can check the fuel pump’s condition:

  • Inspect the fuel pump fuse: A blown fuse can interrupt power supply to the fuel pump. Check the fuse’s integrity and replace it if necessary.
  • Listen for fuel pump operation: When you turn the key in the ignition, listen for a humming sound coming from the fuel tank. It could indicate a faulty fuel pump if you don’t hear anything.
  • Measure fuel pressure: Use a fuel pressure gauge to test the pressure at the fuel rail. If the pressure is significantly lower than the manufacturer’s specifications, it may indicate a failing fuel pump.

Evaluating Fuel Line Integrity

A compromised fuel line is another common issue that can hinder starting in cold weather. The cold temperatures can cause the fuel line to contract, leading to fuel flow issues or even fuel line cracks. Here are some steps to evaluate the fuel line’s integrity:

  • Inspect for visible damage: Check the fuel line for any visible signs of damage, such as cracks, leaks, or loose connections. Address any issues promptly.
  • Test fuel line flexibility: Gently squeeze the fuel line to check if it feels flexible or brittle. Flexible lines indicate normal functioning, while brittle lines may require replacement.

Using Fuel Additives For Cold Weather

To combat fuel-related starting issues in the cold, you can consider using fuel additives specifically designed for cold weather conditions. These additives can help prevent fuel line freezing and improve fuel flow. Here are some fuel additives you can use:

  • Fuel line antifreeze: This additive lowers the freezing point of the fuel, reducing the chances of fuel line blockages due to freezing.
  • Injector cleaner: Regular use of injector cleaner can prevent the buildup of deposits in the fuel system, improving its overall performance in cold temperatures.
  • Fuel stabilizer: Using a fuel stabilizer helps to maintain fuel quality during storage periods, preventing issues caused by stale fuel.

Also Read: Jeep Renegade Won’T Start Brake Locked

Engine Mechanical Issues

If you’re experiencing trouble starting your Jeep Compass in cold weather, it could be due to various engine mechanical issues. Here are some important areas to inspect when troubleshooting this problem:

Inspecting Spark Plugs And Ignition System

  • Check for worn or fouled spark plugs that may not generate enough spark for ignition.
  • Ensure proper spark plug gap and replace any damaged or worn plugs.
  • Examine ignition coils and wires for any signs of damage or wear.
  • Test the ignition system components to ensure they are functioning correctly.

Verifying The Functionality Of The Cooling System

  • Check the coolant level and ensure it is at the appropriate level.
  • Inspect the radiator and hoses for any leaks or damage.
  • Assess the condition of the thermostat to ensure it is opening and closing properly.
  • Test the functionality of the water pump to ensure it is effectively circulating coolant.

Assessing The Condition Of The Starter Motor

  • Inspect the starter motor for any signs of damage or wear.
  • Check the electrical connections to the starter motor and ensure they are secure.
  • Test the starter motor to ensure it is receiving power and engaging properly.

Preventive Measures For Cold Weather Starting

To prevent your Jeep Compass from failing to start in cold weather, take preventive measures such as using a battery blanket, checking your fuel system, ensuring proper engine oil viscosity, keeping antifreeze levels topped up, and using a block heater if necessary.

Regular maintenance and preparation can help avoid cold weather starting issues.

1. Parking In A Garage Or Under A Carport

Consider parking in a garage or under a carport to prevent your Jeep Compass from having starting issues in cold weather. This protects from the elements and helps keep the engine warmer. Here are some benefits of parking in a garage or under a carport:

  • Protection from extreme cold: Parking your Jeep Compass in a garage or under a carport is shielded from harsh winter conditions. This helps prevent the engine from becoming too cold and difficult to start.
  • Reduced exposure to moisture: Cold weather often brings snow and ice, which can accumulate on your vehicle. Parking in a garage or under a carport can minimize your Jeep’s exposure to moisture, which can hinder starting in colder temperatures.
  • Limited exposure to wind: Wind chill can make the temperature feel even colder than it actually is. Parking in a sheltered area like a garage or carport provides a barrier against wind, helping to maintain a slightly warmer environment for your Jeep Compass.

2. Using A Block Heater Or Battery Blanket

A block heater or battery blanket is another preventive measure for starting your Jeep Compass in the cold. These devices help warm the engine and battery, ensuring a smoother start even in freezing temperatures. Here are the benefits of using a block heater or battery blanket:

  • Engine preheating: A block heater is designed to warm the engine coolant, which in turn warms the engine block and oil. By preheating the engine, it reduces the strain on the battery and makes starting the Jeep Compass easier in the cold.
  • Battery protection: Cold temperatures can negatively impact the battery’s performance. A battery blanket wraps around the battery, providing warmth and helping to maintain its charge. This improves the battery’s ability to start the vehicle, even in frigid weather.
  • Improved fuel efficiency: When the engine is already warm, it reaches its optimal operating temperature more quickly. This leads to improved fuel efficiency and reduced wear and tear on the engine, ultimately extending its lifespan.

3. Regular Maintenance And Tune-Ups

Regular maintenance and tune-ups are essential for keeping your Jeep Compass starting smoothly in cold weather. By following a maintenance schedule and addressing any issues promptly, you can avoid unnecessary starting problems. Here are some key points to remember:

  • Battery maintenance: Ensure that your battery is in good condition and well-maintained. Regularly check the battery connections for corrosion and clean them if necessary. Also, have the battery load tested to ensure it can handle the demands of starting in the cold.
  • Fuel system inspection: Cold weather can cause fuel lines to contract, leading to potential fuel delivery issues. Regularly inspect the fuel system for any leaks or blockages. Consider using a fuel line antifreeze to prevent fuel line freezing.
  • Ignition system check: Make sure your ignition system is in good working order. This includes inspecting spark plugs, ignition cables, and the ignition coil. Replace any worn-out components to ensure a reliable start in cold temperatures.
  • Fluid maintenance: Cold weather can affect various fluids in your Jeep Compass, such as engine oil, coolant, and transmission fluid. Follow the manufacturer’s recommended maintenance schedule for fluid changes and ensure proper levels before the arrival of cold weather.

Expert Tips for Preventing Cold-Weather Starting Problems

Expert Tips for Preventing Cold-Weather Starting Problems

As an expert in dealing with Jeep Compass starting issues in cold weather, here are some additional tips to help you avoid such problems altogether:

  1. Regular Maintenance: Stick to your Jeep Compass’ recommended maintenance schedule, including battery checks and engine inspections.
  2. Keep Your Jeep Compass Warm: If you have a garage, park your vehicle inside to protect it from extreme cold and ensure a warmer start.
  3. Use High-Quality Fuel: Opt for high-quality fuel with proper additives to prevent fuel line freezing and improve engine performance.
  4. Consider a Battery Upgrade: If you frequently experience cold-weather starting problems, consider upgrading to a higher cold-cranking amp (CCA) battery.
  5. Warm Up Your Vehicle: Give your Jeep Compass a few minutes to warm up before driving in cold weather, allowing fluids to flow better.
  6. Inspect Belts and Hoses: Check for signs of wear and tear on belts and hoses, and replace them as necessary to prevent issues.
  7. Keep Your Fuel Tank Full: Maintaining a higher fuel level can minimize condensation in the tank, reducing the risk of fuel line freezing.
  8. Avoid Short Trips: In colder weather, try to combine short trips into longer ones to keep the engine running for an extended period.
  9. Protect Electrical Connections: Apply dielectric grease to electrical connections to prevent corrosion and ensure reliable starting.
  10. Winter Tires: Consider using winter tires for improved traction and control in cold and icy conditions.

Seeking Professional Help

If you’ve tried the troubleshooting tips and your Jeep Compass still won’t start in the cold, it’s best to seek assistance from a certified mechanic or Jeep service center. They have the expertise and tools to diagnose and resolve complex starting issues.

Wrapping Up

To wrap up, you’re not alone if you’re facing difficulties starting your Jeep Compass in cold weather. It’s a common issue that many Jeep owners encounter. The cold temperatures can affect various components of your vehicle, such as the battery, fuel system, and ignition.

To overcome this challenge, there are several steps you can take. First, make sure your battery is in good condition and fully charged. Consider using a battery blanket or heater to keep it warm. Secondly, check your fuel system for any blockages or clogs hindering proper fuel flow.

Lastly, ensure that your ignition system is in good working order and consider using a block heater to warm up the engine before starting. By following these tips, you can significantly increase your chances of starting your Jeep Compass successfully in cold conditions.

Stay prepared, stay warm, and keep those wheels turning even in the coldest temperatures.


What Does It Mean When Your Car Won’T Start When It’S Cold?

When your car won’t start in the cold, it could be due to issues with the battery, fuel system, or spark plugs.

Why Is My Jeep Compass Battery Not Starting?

The battery in your Jeep Compass may not start due to a dead battery, loose connections, or a faulty starter motor.

How Do You Start A Jeep Compass With A Dead Key Fob?

To start a Jeep Compass with a dead key fob, press the start/stop button while holding the fob against it.

Do Jeep Compass Have Electrical Problems?

Yes, Jeep Compass can have electrical problems due to various factors.

Is it safe to use ether or starting fluid to start my Jeep Compass in cold weather?

No, using ether or starting fluid can damage your Jeep Compass’ engine and is not recommended.

Should I warm up my Jeep Compass before driving in cold weather?

Yes, giving your Jeep Compass a few minutes to warm up before driving allows the engine to reach optimal operating conditions.

Will using a higher CCA (Cold Cranking Amps) battery help in cold weather starting?

Yes, a higher CCA battery can provide more power during cold starts, improving the chances of successful ignition.

Can I use synthetic engine oil to ease cold weather starting?

Yes, synthetic engine oils have better cold-weather characteristics, making engine starting more manageable in low temperatures.

How do I know if my Jeep Compass’s fuel system is frozen?

If the fuel line is frozen, the engine may sputter or fail to start. Adding an anti-gel fuel additive can prevent this issue.

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