Reference meaning
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.
Narrow by vehicle
A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
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.
Scan worksheet →Manufacturer wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
B1F7E54Head restraint inclination adjustment not normalized. No calibration
B1F7E54Head restraint inclination adjustment not normalized. No calibration
Manufacturer communications
1Original wording in English
MERCEDES-BENZ, MERCEDES-MAYBACH
Complaint • Driver's seat and/or front passenger seat cannot be adjusted. • Not possible to adjust front seats to memory preset. • Head restraints of front seats cannot be adjusted. • Cannot move to chauffeur mode/reclining seat position. Fault identification: → Create log of seat control unit (both conditions must be met) 1. Fa…
Check vehicle applicability
34A listed vehicle is a research lead. Confirm the engine, production range and software in the manufacturer's information.
| Make | Model | Model year |
|---|---|---|
| Mercedes-Benz | AMG S 63 E 4MATIC+ ↗ | 2026 |
| Mercedes-Benz | AMG S 63 E 4MATIC+ ↗ | 2025 |
| Mercedes-Benz | AMG S 63 E 4MATIC+ ↗ | 2024 |
| Mercedes-Benz | S 500 ↗ | 2023 |
| Mercedes-Benz | S 500 ↗ | 2021 |
| Mercedes-Benz | S 500 4MATIC ↗ | 2026 |
| Mercedes-Benz | S 500 4MATIC ↗ | 2025 |
| Mercedes-Benz | S 500 4MATIC ↗ | 2024 |
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.