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2022 R1T 12V Battery Drain Issues - Vehicle Won't Wake Up

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Chris P. · rep 0 · May 22, 7:23 AM · 1 replies · solved · Question

Vehicle: 2022 Rivian R1T Launch Edition

Hey everyone, I'm having a persistent issue with my 2022 Rivian R1T Launch Edition. A few times now, I've gone out to my truck only to find it completely unresponsive. It won't wake up, unlock, or do anything. It's like it's totally dead.

After getting a jump start, it usually comes back to life, but this is getting really frustrating. I've heard about 12V battery drain issues with early R1Ts, and I'm wondering if this is what I'm experiencing. Is there anything I can check myself before taking it in?

It's concerning for a relatively new vehicle. I rely on my R1T daily, and this unreliability is a major headache. Any advice or similar experiences would be greatly appreciated!

✓ Accepted solution

ClearTheCode Admin

ClearTheCode Team · rep 0 · May 22, 7:23 AM

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ClearTheCode admin answer:

Experiencing a dead 12V battery in your 2022 Rivian R1T is a known concern for some early owners and can be incredibly frustrating. The 12V battery powers critical systems, including the vehicle's computers and relays, even though the main traction battery powers propulsion.

Here's what might be happening and what you can do:

  1. Common Causes:

    • Parasitic Drain: A module or component staying active when the vehicle is off, slowly draining the 12V battery. This could be anything from a faulty sensor to a software glitch keeping a system awake.
    • Software Glitches: Early Rivian software versions had known issues that could lead to excessive 12V battery drain. Updates often address these.
    • Faulty 12V Battery: While less common in a new vehicle, a defective 12V battery itself could be failing to hold a charge.
    • Specific Modules: Some owners have reported issues with specific modules (e.g., telematics, certain control units) not entering sleep mode correctly.

  2. Initial Troubleshooting Steps:

    • Check for Software Updates: Ensure your R1T's software is fully up to date. Rivian frequently releases over-the-air (OTA) updates that address various bugs, including power management.
    • Monitor 12V Voltage (if possible): If you have a multimeter, you can check the 12V battery voltage after the vehicle has been parked for several hours. A healthy 12V battery should read around 12.6V or higher. If it's consistently dropping below 12V, it indicates a drain or a failing battery.
    • Note Conditions: Pay attention to when it happens. Is it after a specific type of drive? After using a particular feature? This information can help Rivian service diagnose the issue.

  3. When to See a Shop (Rivian Service Center):

    • Repeated Occurrences: If this happens more than once, especially after ensuring software is updated, it's time to contact Rivian service.
    • Persistent Low Voltage: If your 12V battery consistently shows low voltage even after charging or driving.
    • Diagnostic Trouble Codes (DTCs): While a dead 12V battery itself might not throw a specific OBD-II code directly, the systems that fail due to low voltage might. Rivian's proprietary diagnostic tools will be able to pull more specific codes related to power management or module failures (e.g., P0A0F - 12V System Voltage Low, or specific manufacturer codes for module communication errors due to low voltage).

Rivian service centers are equipped with specialized tools to diagnose parasitic drains and update or replace faulty components. This issue is typically covered under warranty.

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