What to do first
Do not reset warnings before reading them. The right first step is usually: note the exact message, photograph the screen, check the owner’s manual, then decide whether it is safe to continue using the guidance below.
- Note the exact wording and color of the warning.
- Check whether it happened during charging, driving, or parked idle.
- Look up the exact message in the owner’s manual before clearing it.
- Only reset if the manual allows and you know the trigger.
- Keep photos and timestamps for any recurring alert.
Charging indicators
Unable to charge or start charging: Check cable alignment, charge port lock, power source, and charge schedule first.
Reduced charging speed: Thermal or power-source limits are slowing the session; often temporary.
Charge interrupted: Connection, vehicle wake threshold, or port sensor interrupted the session.
Battery and thermal indicators
Amber high-voltage notice: Thermal, current, or insulation condition detected. Drive cautiously if movement is still allowed.
Red high-voltage warning: Do not ignore; stop safely and follow the manufacturer emergency guidance.
Battery thermal management active: The vehicle is heating or cooling cells; expect reduced power or range briefly.
Reduced power or performance: Thermal condition limits acceleration or top speed temporarily.
Battery not balanced: Long-term battery behavior worth reviewing later unless paired with range loss or a warning light.
Tire and pressure indicators
Tire pressure light: Check when the tires are cold. Temperature changes often cause false activations.
TPMS system fault: Sensor or receiver issue, not necessarily a puncture.
Port, door, and system status indicators
Charge port not closed: Port may be unlatched, frozen, or obstructed by debris.
Door, hood, or trunk ajar: Usually a lock or sleep setting change, but inspect before assuming software.
Maintenance reminder: Routine service, cabin filter, or tire rotation due.
Reset versus service
Do not reset if:
- The warning repeats.
- The manual does not list civilian troubleshooting for this exact alert.
- You cannot state what triggered it.
Reset only if:
- It was a one-time notice after a clear external trigger such as rain, cold startup, or power flicker.
- The manual authorizes civilian troubleshooting.
When to tow or call support immediately
Tow or emergency response may be appropriate for red high-voltage warnings, smoke, unusual hot or chemical odors, repeated thermal alerts while parked, or any condition the manual labels stop-drive.
Need now, wait, skip
Need now:
- One warning-light photo and manual lookup procedure
- Glove-box note of emergency response steps
Wait:
- Third-party scanner apps until you know the manufacturer app and manual are sufficient
Skip:
- Global resets without a documented cause
- DIY high-voltage inspection or disassembly
Related guides
Read trickle charging, sleep mode, and common error codes for charging behavior and high-voltage awareness and emergency procedures for safety escalation.