What does a Rivian R1T 'Critical Battery Issue' warning mean?

Short answer: A Rivian R1T Critical Battery Issue warning is a stop-and-call-service event. Owners have been towed and later needed HVAC compressor or other high-voltage repairs. Do not keep driving if the truck warns of an electrical hazard.

Symptom: Critical Battery Issue on the display, electrical hazard message, loss of drive, or a truck that needs a tow mid-trip.

What to check first

1. Pull over safely and contact Rivian Roadside / Service.
2. Screenshot the exact warning text.
3. Do not drive through water if the hazard message says to avoid it.
4. Ask Service whether the compressor, 12V system, or pack tested bad.

Likely causes

1. HVAC compressor / high-voltage isolation fault. Owners with Critical Battery warnings later had HVAC compressor and related high-voltage parts replaced. A shorted compressor can look like a pack problem.
2. 12V / low-voltage support problems. Rivians also throw scary warnings when the low-voltage system is unhappy. Service sorts 12V vs high-voltage causes.
3. Genuine high-voltage battery fault. Sometimes the traction battery or contactors need service. Do not ignore the electrical-hazard wording.

What it usually costs

Owners were under warranty in these threads; out-of-warranty HV repairs are expensive.

Is it safe to keep driving?

No when the Critical Battery / electrical hazard warning is active. Arrange a tow.

DIY or shop?

No. High-voltage diagnosis is Rivian-only for most owners.

Recalls, bulletins and complaints in plain words

• Related recalls: NHTSA lists these recalls touching this area of the Rivian R1T: 25V537000 (2025-2025 model years, electrical system:propulsion system:traction battery); 25V585000 (2025-2025 model years, electrical system:adas:autonomous/self driving:software). 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: 22 keyword-matched complaints for Rivian R1T 2022–2025 (of 134 unique complaints queried, NHTSA complaints API by model year, queried 2026-11-05; keywords: battery, compressor, hvac, critical, 12v). This counts complaints that mention these words. It is not a defect finding.

What owners report

• In Critical Battery Issue - Service Vehicle Immediately on Reddit r/Rivian, a 2023 R1T owner got Critical Battery Issue — Service Vehicle Immediately with an electrical-hazard warning and advice to avoid water. The truck was roughly new and needed service.
• In Updated #2: Well this trip didn’t go as planned. on Reddit r/Rivian, an R1T owner updated a roadside Critical Battery incident during a trip. Follow-up service work owners discussed in related threads included 12V, HVAC compressor, and drive-unit repairs after serious battery warnings.

Quick tip

Treat Critical Battery like a red oil light—park it and get help.

Vehicle focus: Rivian R1T 2022-2025 (similar warnings appear on R1S).

Safety / mechanic note

High-voltage faults can present shock and fire risks. Verify with a mechanic.