If you own a Jeep Compass, you may have heard about the auxiliary battery. This small, but important, component helps run your vehicle’s electronics, especially stop-start systems.
Sometimes, the auxiliary battery fails before the main battery does. Knowing how much it costs to replace this battery can help you plan your car maintenance and avoid sudden issues on the road.
What Is The Auxiliary Battery In A Jeep Compass?
The auxiliary battery is a secondary battery in your Jeep Compass. While the main battery starts the engine, the auxiliary battery supports features like start-stop, electronic stability control, and infotainment systems when the engine is off. Without a healthy auxiliary battery, you might notice problems like the start-stop system not working, warning lights, or electronics malfunctioning.
Many drivers overlook this battery until warning signs appear. Unlike the main battery, the auxiliary one is smaller and can fail more quickly, especially in hot or very cold climates.
Average Cost To Replace Auxiliary Battery
Replacing the auxiliary battery in a Jeep Compass usually costs between $120 and $350. This range depends on several factors:
- Battery brand and quality
- Labor rates in your area
- Warranty coverage
- Vehicle year and model
Here’s a comparison of typical costs:
| Part | Low-End Cost | High-End Cost |
|---|---|---|
| Auxiliary Battery Only | $80 | $180 |
| Labor | $40 | $170 |
| Total Replacement | $120 | $350 |
Dealerships usually charge more for both parts and labor. Independent shops may offer lower prices, but make sure they use a compatible, high-quality battery.
Factors That Affect Replacement Cost
The final price you pay can vary. Here are the main things that impact the cost:
- Location: Mechanics in big cities often charge higher labor rates.
- Battery Type: OEM (original) batteries cost more than aftermarket options. Premium brands with longer warranties are pricier.
- Model Year: Newer Jeep Compass models sometimes use different battery types or more complex systems, which can increase labor time.
- Dealer vs. Independent Shop: Dealers provide factory-approved parts, but their prices are usually higher.
- Warranty Status: If your Jeep is still under warranty, the replacement might be free or cheaper.
Here’s a look at how different shops compare:
| Shop Type | Average Part Cost | Average Labor Cost |
|---|---|---|
| Dealership | $120 | $140 |
| Independent Mechanic | $90 | $70 |
| Do-It-Yourself | $80 | $0 |
Signs Your Auxiliary Battery Needs Replacement
It’s easy to miss the warning signs of a failing auxiliary battery. Watch for these signals:
- Start-stop system turns off
- Dashboard warning lights
- Radio or electronics flicker
- Frequent jump-starts needed
- Check engine light related to battery
If you notice these, get your battery tested soon. Ignoring the problem may lead to more expensive repairs.
Can You Replace It Yourself?
Many Jeep Compass owners ask if they can change the auxiliary battery without a mechanic. If you have basic tools and follow safety steps, you can replace it yourself.
Steps include:
- Locate the auxiliary battery (usually under the passenger seat or in the engine bay).
- Disconnect the negative terminal of the main battery first.
- Remove covers and brackets holding the auxiliary battery.
- Disconnect and remove the old battery.
- Install the new battery, connect terminals, and reassemble parts.
- Reconnect the main battery terminal.
However, newer models might need a system reset with a scan tool after replacement. If you are not comfortable with this, it’s safer to use a professional.
Saving Money On Replacement
You can keep costs down with these strategies:
- Shop around: Get quotes from both dealers and local shops.
- Buy the battery online: Sometimes, you can find better deals for the same brand.
- Check for coupons: Many shops offer discounts on battery replacement.
- DIY if possible: If you’re handy, doing it yourself saves labor charges.
One overlooked tip: Always keep your receipt and warranty card. Many batteries have a free replacement period if they fail early.
How Long Does An Auxiliary Battery Last?
Most Jeep Compass auxiliary batteries last 3 to 5 years. Extreme weather, short trips, or heavy electronics use can shorten this lifespan.
Here’s a quick comparison of battery lifespans:
| Driving Condition | Expected Lifespan |
|---|---|
| Normal (mixed driving) | 4-5 years |
| Mostly city, short trips | 2-4 years |
| Extreme heat/cold | 2-3 years |
If your Jeep is over three years old, ask your mechanic to check the auxiliary battery at every service.
Is It Worth Replacing?
Driving with a weak auxiliary battery can cause more than inconvenience. Some systems may stop working, and your main battery can drain faster.
Ignoring the problem risks getting stranded or needing more costly electrical repairs.
If you plan to keep your Jeep Compass for a few years, replacing the auxiliary battery as soon as it fails is almost always worth it.
Frequently Asked Questions
How Do I Know If My Jeep Compass Has An Auxiliary Battery?
Most Jeep Compass models with start-stop systems have an auxiliary battery. Check your owner’s manual or ask your dealer to confirm.
Is The Auxiliary Battery Covered Under Warranty?
If your Jeep is still under the basic or battery warranty, the auxiliary battery might be covered. Check your warranty booklet or contact your dealer for details.
Can I Use A Regular Battery As A Replacement?
No, only use a compatible auxiliary battery for your Jeep Compass. Regular batteries may not fit or work safely with your car’s systems.
What Happens If I Don’t Replace A Dead Auxiliary Battery?
You may lose start-stop function, see warning lights, and even drain your main battery. Over time, this can cause more serious electrical issues.
Where Can I Find More Information About Jeep Compass Battery Systems?
For detailed technical info, visit the official Jeep Compass page.
Replacing the auxiliary battery in your Jeep Compass doesn’t have to be stressful. Knowing the typical costs, understanding warning signs, and exploring your options can help you make a smart choice and keep your Jeep running smoothly.
