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2019 Jeep Renegade Battery Draining Constantly - Parasitic Draw?

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Laura J. · rep 0 · May 22, 3:29 AM · 1 replies · solved · Question

Vehicle: 2019 Jeep Renegade Limited

My 2019 Jeep Renegade Limited (2.4L engine) has been having a persistent issue with the battery draining. If I leave it parked for more than a day or two, the battery is completely dead. I've replaced the battery twice in the last year, thinking it was just a bad battery, but the problem keeps coming back.

I'm suspecting a parasitic draw somewhere. Has anyone else with a Renegade experienced this? What are the common culprits for battery drain in these vehicles? I'm not seeing any lights left on, and the radio turns off.

I'm trying to avoid just throwing parts at it. Any tips on how to diagnose this myself or what to tell the mechanic to look for? No check engine light or other warnings when it's running.

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 3:29 AM

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ClearTheCode admin answer:

Battery drain issues, especially recurring ones after multiple battery replacements, strongly suggest a parasitic draw in your 2019 Jeep Renegade. This means something is drawing power even when the vehicle is off. Here's how to approach it:

  1. Common Culprits for Parasitic Draw in Jeeps:

    • Uconnect/Infotainment System: These systems can sometimes fail to fully shut down, keeping modules active. This is a very common source.
    • Body Control Module (BCM): The BCM controls many electrical functions and can sometimes stay awake or malfunction.
    • Ignition Off Draw (IOD) Fuse: There's often a specific fuse for 'Ignition Off Draw' that can be pulled to isolate a large section of the electrical system. Consult your owner's manual for its location.
    • Aftermarket Accessories: Any non-factory installed items (remote start, dash cam, stereo components) are prime suspects.
    • Faulty Relays: A relay stuck in the 'on' position can continuously power a circuit.
    • Door/Hood Ajar Switches: A faulty switch might trick the car into thinking a door is open, keeping interior lights or modules active.

  2. DIY Diagnosis (Requires Multimeter):

    • Measure Draw: Disconnect the negative battery terminal. Connect a multimeter in series between the negative battery post and the negative battery cable (set to Amps). Wait for the vehicle to 'go to sleep' (can take 15-30 minutes). A normal draw is usually under 50 milliamps (0.05 amps). Anything significantly higher indicates a problem.
    • Fuse Pulling: Once you have a high draw reading, start pulling fuses one by one (from the fuse box under the hood and inside the cabin) while watching the multimeter. When the amperage drops significantly, you've found the circuit with the draw. This narrows down the problem area.

When to See a Shop:

  • If DIY is Challenging: Diagnosing parasitic draws can be time-consuming and requires patience and a good understanding of electrical systems. If you're uncomfortable with the multimeter steps, it's best to take it to a professional.
  • Persistent High Draw: If you've identified a circuit but can't pinpoint the exact component, a dealership or an experienced auto electrician will have advanced diagnostic tools to trace the draw more precisely. Since your vehicle is a 2019, it might still be under the powertrain warranty (though electrical issues are often covered by the basic warranty, which might have expired). Discuss potential costs upfront.
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