My BMW i4 says "Drivetrain malfunction" and won't drive. What should I do?

Short answer: Shut the car down, lock it, walk away for about 5 minutes and restart. Owners say that clears a lot of these warnings. Then run your VIN for recall 25V395000, which covers drive-motor software that can shut down the high-voltage system, and the battery recalls. If it comes back, get it to the dealer while you're under warranty. One owner just out of warranty was quoted about $10,000.

Symptom: A 'Drivetrain malfunction' message, sometimes with 'You are unable to drive' or a red warning, and the car won't move or restart.

What to check first

1. Shut down, lock the car, walk away about 5 minutes and restart.
2. Run your VIN at nhtsa.gov/recalls, especially 25V395000.
3. Look under the car for coolant drips.
4. If it comes back, book the dealer and ask for the codes in writing.
5. If you're near the end of your warranty, get it documented now.

Likely causes

1. Software glitch. Many owners cleared the warning by shutting the car down, locking it, walking away a few minutes and restarting.
2. Drive-motor software (recall). BMW recalled some i4s because the drive motor software could shut down the high-voltage system and cause a loss of drive power.
3. Faulty part such as the accelerator pedal or coolant leak. One owner's warning was a short in the accelerator pedal. Others pointed to coolant leaks.
4. High-voltage battery faults (recalls). Several recalls cover battery problems on some i4s.

What it usually costs

Owners' repairs were under warranty. One out-of-warranty owner was quoted about $10,000.

Is it safe to keep driving?

If it says you can't drive, don't try. Call BMW roadside. If the warning shows while moving, pull over safely, because you may lose drive power.

DIY or shop?

The restart is DIY. Diagnosis and repair are dealer work. An EV's high-voltage system can stay live with the car off. Leave the orange cables, the big battery and the drive unit to a trained EV technician.

Recalls, bulletins and complaints in plain words

• Related recalls: NHTSA lists 25V395000 (some 2022-2025 i4s: drive motor software may shut down the high-voltage system, causing a loss of drive power), 22V944000 (battery control software may interrupt power), 23V295000 (loose connections in the battery cell monitoring circuit can stall the car) and 22V541000 (internal battery damage on some 2022 cars), among others. Check your VIN at nhtsa.gov/recalls. If your car is part of a recall, the dealer fixes it for free.
• Plain words: The complaint count below shows how often owners reported problems that mention these words to NHTSA. A count is not proof of a defect.
• NHTSA complaints: 32 keyword-matched complaints for BMW i4 2022–2025 (of 82 unique complaints queried, NHTSA complaints API by model year, queried 2026-10-31; keywords: drivetrain, 12 v, battery, won t start, malfunction, loss of power, propulsion) (NHTSA returned no data for 10 model-year queries). This counts complaints that mention these words. It is not a defect finding.

What owners report

• In Drivetrain malfunction on Reddit r/BMWI4, an i4 owner got 'Drivetrain malfunction. You are unable to drive.' BMW said to restart the car, which cleared it. Another owner said theirs was a short in the accelerator pedal, which was replaced. Others suggested checking for coolant leaks, and one cleared it by locking the car, walking away and coming back.
• In Drivetrain malfunction on Reddit r/BMWI4, an owner of a 2023 i4 got the warning as soon as they shifted into park and was four days in at the dealer with no update. Another owner said theirs happened just out of warranty and the quote was about $10,000.
• In Drivetrain malfunction 😡 on Reddit r/BMWI4, an owner picked up a certified pre-owned 2023 i4 eDrive40 at 30,400 miles and six days later it wouldn't restart at 57% charge, with a red drivetrain warning, and was towed. Others said powering off, rebooting and walking away for 4-5 minutes can clear it, and that the CPO warranty should cover a real failure.

Quick tip

One restart is fine. If it happens again, it's a warranty claim, and you want it on record before the warranty runs out.

Vehicle focus: BMW i4, 2022-2025.

Safety / mechanic note

Loss of drive power is a safety item. Verify with a mechanic.