What does this code mean?
The wording below belongs to the named make and communication. Match the complete code, reporting module, model year and engine before applying it.
A code identifies a detected condition, not a part that must automatically be replaced.
Manufacturer communications
1Original wording in English
MERCEDES-BENZ
Reported code forms B1E9146 B1E9151 B1E9157
Complaint The panoramic sliding sunroof operates in a stepped movement. The panoramic roof becomes denormalized without an apparent reason (not directly after control unit replacement). Automatic operation of the glass…
Check vehicle applicability
6A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Mercedes-Benz | E 450 | 2024 |
| Mercedes-Benz | E 450 4MATIC | 2026 |
| Mercedes-Benz | E 450 4MATIC ALL-TERRAIN | 2026 |
| Mercedes-Benz | E 450 4MATIC ALL-TERRAIN | 2025 |
| Mercedes-Benz | E 450 4MATIC ALL-TERRAIN | 2024 |
| Mercedes-Benz | E53 E 4MATIC+ ALL-TERRAIN | 2026 |
Before replacing a part
Record codes and freeze-frame data. Check battery condition, related codes and visible wiring or hose damage. Follow the vehicle's diagnostic procedure and test results before replacing parts.
Can I keep driving?
A code alone cannot establish whether driving is safe. A flashing malfunction light, severe shaking, overheating, oil-pressure warning or loss of braking or steering needs prompt attention. Stop in a safe place and seek assistance when control or engine safety is affected. Follow the vehicle handbook.