Red · Warning lights
Battery charging warning light
The battery light actually means a charging fault: the alternator has stopped charging. The car runs on battery reserve, often 30 minutes to an hour. Switch off AC, radio and seat heaters and head to a garage without stopping the engine.
Can I drive?Yes, carefully
Red / AmberRed
Likely causes3
Likely causes
- Alternator not charging#1
With the engine running, battery voltage should read 13.8 to 14.7 V. Below that, the alternator is not charging.
- Worn auxiliary belt#2
A squeal on cold start or when turning the wheel very often comes from the auxiliary belt or its tensioner.
- Weak or dying battery#3
A battery over 5 years old that rests below 12.4 V is very likely the culprit.
Fault codes often linked
Indicative estimate. MecaScan cannot see your vehicle: always have a diagnosis confirmed by a professional, and never work on brakes, steering or airbags without the skills.