Bosch eBike Systems
System / software
502
Bike light fault
The drive unit has detected a fault in the connected lighting circuit, e.g. an implausible voltage when the light is switched on or off. Typical causes are a defective headlight or taillight, a broken cable or a loose connector. The error only occurs on bikes whose lights are powered by the drive system.
- Drive system
- Bosch eBike Systems
- Category
- System / software
- Motor behavior
- assist unaffected
- DIY-friendly?
- possible
Roadside self-help
- Check headlight, taillight and visible cables for damage and loose plugs
- Restart the system
- If the error persists, have the lighting circuit checked by a dealer
Possible causes
- Defective headlight or taillight high
- Broken or damaged light cable medium
- Loose plug connection on the light medium
Symptoms
- Error 502 on the display
- Front or rear light does not work
- Light flickers or fails intermittently
Inspection / repair
- Difficulty: easy
- DIY: possible
- no dealer tool needed
- Estimated cost: 10–60 €
- Estimated time: 0.25–1 h
- Component: lighting system
- Component: headlight
- Component: taillight
- Component: wiring harness
Applies to
Gen2-Gen4 (BES2/BES3)
Displays: Intuvia/Purion/Kiox/Nyon