Airbag control unit with part number 985106332R

What is the function of the airbag control unit 985106332R?

The control unit with part number 985106332R is the central control module of the passive safety system (SRS) in numerous Dacia models. As an original equipment (OE) part, it is often also listed under Bosch’s manufacturer part number 0285001650. Its primary task is to process sensor data in order to deploy airbags and seatbelt pretensioners precisely and promptly in the event of a crash.

This unit continuously monitors all components of the restraint system, including crash sensors, airbag modules, seatbelt pretensioners, and seat occupancy detection. Upon a collision, the electronics analyze incoming signals and decide within milliseconds which safety devices need to be activated to provide optimal protection for occupants.

Due to its critical role in vehicle safety, this control unit is subject to stringent quality requirements. A defect in this module inevitably results in complete failure of the entire airbag system and is indicated by the airbag warning light on the dashboard.

Why does the airbag control unit 985106332R fail?

The most common causes of failure for the 985106332R control unit are internal hardware defects and the storage of crash data after an accident. Electronic components such as capacitors or memory chips (EEPROM/Flash) can degrade or become damaged due to voltage spikes, leading to permanent malfunctions and the illumination of the SRS warning light.

A major reason for repair is blocked crash data stored in the memory. After an airbag deployment, the control unit locks itself for safety reasons and permanently stores the accident data. This condition cannot be reset through standard workshop diagnostics and requires specialized reprogramming at the chip level.

Other typical defects are purely electronic in nature. These include faulty capacitors that lose their capacitance, short circuits on the circuit board, cracks at solder joints caused by vibration or thermal stress, as well as damage to memory and communication areas. In these cases, there is a genuine hardware fault that can only be resolved by replacing the affected components.

The part number 985106332R is often referenced alongside Bosch’s part number 0285001650, indicating a shared technical platform where similar failure patterns may occur.

How do you recognize a defect in the 985106332R control unit?

The clearest symptom of a defect in the airbag control unit 985106332R is a continuously illuminated or intermittently flashing airbag warning light on the instrument cluster. Often, when reading the fault memory, specific error codes such as B1000 or indications of an internal control unit fault can be found, pointing to a hardware issue.

The airbag warning light is the vehicle’s primary warning signal. It indicates that the SRS self-diagnosis has detected a critical error. In this state, the entire passive safety system is disabled, meaning that neither airbags nor seatbelt pretensioners will deploy in the event of a crash.

Another sign may be the lack of communication with the control unit. If a workshop attempts to read the module via the OBD interface, they might receive no response, suggesting a severe internal fault in the power supply or the communication section of the circuit board.

In which vehicles is the 985106332R control unit installed?

This Dacia original part number is fitted across a wide range of models, with particular emphasis on the popular Dacia Sandero, Sandero Stepway, Logan, and Logan MCV series. At Airbag24, we offer professional repair services for the 985106332R control unit on all compatible vehicles.

At Airbag24, we repair the 985106332R part number for the following Dacia models:

Dacia Sandero models: Sandero II B8 (2012–2017), Sandero II B8 Facelift (2017–2022), Sandero Stepway II, Sandero Access I & II, Sandero Ambiance II, Sandero Laureate II.

Dacia Logan models: Logan I (including Facelift 2004–2013), Logan II (including Facelift 2012–2020), Logan III (from 2021), Logan MCV I & II (2006–2020), Logan MCV III, Logan Pick-up I & II, Logan Van I & II, Logan Ambiance II.

Additional Dacia models: Duster Laureate I, Lodgy Ambiance I, as well as various older series such as 1410 I, 1210 I, 1110 I, 500 I, 1304 I, 1320 I, Drop Side I, 1310 CN I, and 1410 Sport I.

How is the 985106332R control unit repaired?

After being sent to Airbag24, the control unit undergoes a standardized, professional repair process. This begins with a detailed initial inspection to verify the fault, followed by electronic refurbishment of defective components and deletion of crash data. A final functional test on the test bench ensures quality, backed by 2 years’ statutory liability for defects.

Upon receipt at Airbag24, the control unit undergoes a comprehensive diagnostic procedure. Technicians read out the fault memory to document reported error codes and compare them with the customer’s description of the issue. This is followed by a visual inspection of the circuit board for signs of burning, corrosion, or other obvious damage.

The next step involves electronic repair. Defective passive and active components—such as electrolytic capacitors, MOSFETs, or voltage regulators—are identified and replaced. Cold solder joints are professionally re-soldered (reflow). If crash data has been stored, it is reliably and completely erased through reprogramming of the EEPROM or flash memory.

Each repaired control unit undergoes a final functional test on a specialized test bench. This simulates the vehicle environment to ensure that the SRS system communicates flawlessly again and that all functions operate correctly. We provide 2 years' statutory liability for defects on the entire repair service.