What is a BMW X5 E70 airbag control unit?
The BMW X5 E70 airbag control unit is your vehicle's central safety unit, activating all occupant restraint systems, such as airbags and seatbelt pretensioners, within milliseconds in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper functioning of all connected airbag modules and safety systems.
This critical component is specifically designed for the BMW X5 E70 (model years 2006-2013), including LCI models, as well as the BMW X6 E71 and X6 Hybrid E72 series.
It is the primary control center of the passive safety system and continuously analyzes signals from acceleration and crash sensors.
After an impact, it stores crucial crash data that can be read out for accident analysis and reset during a professional repair.
Why is the BMW X5 E70 airbag control unit defective?
A BMW X5 E70 airbag control unit can fail due to internal component failure, insufficient power supply, or crash data being permanently stored after an accident. Software errors or corrosion often also lead to failure, which impairs the functionality of the entire airbag system and requires a BMW X5 E70 airbag control unit repair.
Often the cause is a faulty or insufficient internal power supply in the control unit, which can manifest itself in error codes such as 93F9.
Internal memory errors, software problems, or a communication failure with other vehicle systems are other common causes of malfunction. Such defects usually lead to the airbag warning light in the instrument cluster illuminating.
Even after a minor impact, the control unit stores crash data, which, if not properly reset, will cause the airbag lamp to remain permanently lit and necessitate repair.
Common error codes for BMW X5 E70 airbag control unit repair
During BMW X5 E70 airbag control unit repairs, specific error codes may occur that indicate internal problems or power supply disruptions within the control unit. These codes are crucial for a precise diagnosis, as they should not be confused with sensor or belt tensioner defects, but rather directly affect the airbag control unit.
- 93F9 → Energy reserve voltage supply not OK or insufficient → Most common error for insufficient power supply to the airbag control unit.
- B1000 → Control unit communication error → Indicates a faulty data exchange of the airbag control unit.
- B106A → Airbag control unit coding error → Affects the software adaptation of the control unit to the vehicle.
- B1103 → Memory error in the airbag control unit → Indicates an internal defect in the memory module in the control unit.
- B1113 → Airbag control unit software error → Indicates a problem with the control unit's internal software.
- B1200 → Internal errors in the airbag control unit → Collective code for general, unspecified internal faults.
- 93FA → Faulty internal battery voltage in the control unit → Similar to 93F9, indicates a problem with the internal power supply.
- 93F8 → Faulty voltage supply to airbag ECU → General error code for insufficient externally supplied voltage.
What part numbers are available for the BMW X5 E70 airbag control unit repair?
Several original OEM part numbers are available for BMW X5 E70 airbag control unit repairs, ensuring compatibility with your vehicle model. These numbers, some from BMW itself or from supplier Bosch, are crucial for the correct replacement or professional repair of the defective control unit to restore full functionality of the airbag system.
Precise identification using the part number is essential to ensure that the replacement part fits your BMW X5 E70 exactly.
These original OEM part numbers have been carefully verified and come from reliable sources, confirming their validity for the BMW X5 E70 airbag control unit.
- 924008302 (BMW): A common and verified original part number for the E70 airbag control unit.
- 6577924008302 (BMW): Another genuine BMW part number that often appears in conjunction with 924008302.
- 0285010258 (Bosch): An OEM number from the supplier Bosch, which confirms the original quality and is widely used.
- 65.77-9141776-01 (BMW): Another specific BMW number that ensures compatibility for the X5 E70 model.
- 0285010077 (Bosch): An additional Bosch genuine part number relevant to this airbag control unit.