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 wording
Source wording can vary by vehicle and suffix. It is shown as written, not as a universal diagnosis.
B1FBB15Malfunction in 'Head restraint inclination' switch. There is a short circuit to positive or an open circuitB1FBB15Malfunction in 'Head restraint inclination' switch. There is a short circuit to positive or an open circuitManufacturer communications
1Original wording in English
MERCEDES-BENZ, MERCEDES-MAYBACH
Reported code forms B1FBB15
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…
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 |
| Mercedes-Benz | S 500 4MATIC | 2023 |
| Mercedes-Benz | S 500 4MATIC | 2022 |
| Mercedes-Benz | S 580 | 2023 |
| Mercedes-Benz | S 580 | 2021 |
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.