Airbag control unit with part number D26502201V

What does the airbag control unit D26502201V do?

The airbag control unit D26502201V coordinates the restraint system (SRS) in Rover vehicles. Using the crash sensors it detects an accident and calculates within milliseconds which airbags and seatbelt pretensioners must fire. After an accident it stores crash data and locks itself.

It also checks itself and the connected components during operation. Any fault it finds is reported via the airbag warning light.

Why does the control unit D26502201V fail?

Stored crash data after an accident is the most common cause, even if no airbag has deployed. Aged components, cold solder joints, moisture and corrosion on plugs, and voltage peaks in the vehicle electrical system are also possible.

Crash data cannot be removed with a usual diagnostic tool. Airbag24 takes on this erasure during the repair.

The other triggers concern electronics and connections. Components age, solder joints can go cold, moisture and corrosion attack the contacts, and voltage peaks, for example from a weak battery or a jump-start, load the circuit.

How can you tell that the D26502201V is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. The instrument cluster additionally shows a fault message, the diagnostic tool cannot establish a connection to the control unit, and the fault memory cannot be cleared.

The light reports a detected fault, even if the vehicle seems unremarkable in everyday use.

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. Please have the finding checked promptly.

Which vehicles is the D26502201V fitted in?

The control unit D26502201V is installed in these vehicles: Rover Range Rover 2.5 TD, 4.0, 4.6, Autobiography, Classic, HSE, Holland & Holland, P38A and Westminster.

The vehicles are listed below:

• Rover Range Rover 2.5 TD
• Rover Range Rover 4.0
• Rover Range Rover 4.6
• Rover Range Rover Autobiography
• Rover Range Rover Classic
• Rover Range Rover HSE
• Rover Range Rover Holland & Holland
• Rover Range Rover P38A
• Rover Range Rover Westminster

Comparing the part number on the label with this page only tells you about the identity of the unit. Have the fault memory read out before removal, because only it shows whether the control unit itself or a plug or cable is responsible for the fault.

For the same vehicles, we also repair control units with the part numbers AH22-14D374-AG, AMR4905, AWR2031LNF, DK6214D374AF, LR049974, LR067254.

How does the repair of the D26502201V work?

The process begins with reading out the fault memory; attach the log to the unit. Only then disconnect the battery and remove the control unit D26502201V. Finally, create a repair order online and send the well-packed unit.

Airbag24 tests the unit on the test bench, replaces defective components and erases the stored crash data. A function test follows, and your own unit is then returned to you. Processing at Airbag24 usually takes 3–4 working days.

This sequence serves your safety. Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit D26502201V get to Airbag24?

Send the D26502201V as a parcel, or book a UPS collection for an extra charge. After the repair, UPS takes care of the return to you on behalf of Airbag24.

Put the printed repair order into the parcel and pack the control unit shock-proof.