U0508Invalid Data Received From Moveable Roof Control Module A
- Generic OBD-II code · Network
- How the car detects it
- The moveable roof control module drives an electric sunroof or panoramic glass panel, typically through a cable-driven motor with stored end positions and pinch protection. GM uses the same module name: its Saab 9-5 code list files the loss of contact with this module as U0207, the partner of this code. U0508 is stored when the roof module's position and status frames arrive but fail validation. BMW's SI B54 02 13 illustrates the kind of internal fault behind it: F30-series sunroofs stuck or moved in small steps, the FZD module logged checksum and calibration errors, and reprogramming fixed it. Separate generic codes exist for a sunroof control module (U046A); which name a car uses depends on the maker.
- What you may notice
- Sunroof stuck, moving jerkily or one-touch function lost
- Roof not closing with the remote key
- Likely causes
- PossibleRoof module software or lost initialisation of end positions
- PossibleWater damage from blocked roof drains
- RareDamaged wiring or connector in the headliner
- Repair
- Medium · Usually a job for a workshop.Typical cost: €0 – €700
- Related codes
Explanation from obdex (CC0), exactly as the app shows it. Guidance only; confirm with a workshop.