Airbag control unit with part number 8201138526

What does the airbag control unit 8201138526 do?

The airbag control unit 8201138526 belongs to the restraint system (SRS) in Renault. It processes the measured values of the crash sensors, determines in a crash within fractions of a second which airbags and seatbelt pretensioners are triggered, and checks the system constantly. Faults it finds are shown via the airbag warning light.

If the unit stores crash data after an accident, it locks itself afterwards.

It is the point where all components of the system come together, so a failure affects the entire safety function.

Why does the control unit 8201138526 fail?

The most common cause is that crash data was stored after an accident, even if no airbag triggered; a normal diagnostic tool cannot remove it. Other causes include ageing electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes, for example from a weak battery or a jump start.

The unit creates the crash data as soon as it has processed an accident. Regardless of whether an airbag triggered in the end, the data remains stored.

Electronic components age, solder joints can go cold, and moisture promotes corrosion on the plug connections. All of this can lead to intermittent faults.

Voltage spikes from the vehicle electrical system also need attention, for example when the battery is struggling or a vehicle is started with a jump start.

How can you tell that the 8201138526 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, the instrument cluster shows a fault message, the diagnostic tool gets no connection to the control unit, or the fault memory cannot be cleared. Then the airbags and seatbelt pretensioners may possibly not trigger in an emergency.

The warning light is the first thing to watch for. If you see it lit, have the system checked promptly before relying on its function.

A missing connection to the diagnostic tool does not necessarily lie with the control unit. Together with the other signs, however, it is a clear indication.

Which vehicles is the 8201138526 fitted in?

This control unit is fitted in these vehicles: Renault Kangoo II (2008-2021).

The list is based on our data for this part number.

• Renault Kangoo II (2008-2021)

Check the number on the label of the removed unit against this page, so that you are sure you have the correct unit in front of you. Have the fault memory read out first, because only that shows whether the control unit itself is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 2840211503, 8200 656 329, 8200656331, 8201 229 153 A, 8201 475 929, 8201025624.

How does the repair of the 8201138526 work?

First have the fault memory read out and attach the log, then disconnect the battery and only then remove the control unit. Afterwards create the repair order online and send the unit in well packed. Airbag24 examines it on the test bench, repairs defective components, erases the crash data, carries out a function test and sends your unit back; processing usually takes 3–4 working days.

The order of removal is binding, because the restraint system is one of the safety devices.

The time refers solely to the work carried out at Airbag24.

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 8201138526 get to Airbag24?

The unit goes to Airbag24 as a parcel, or you arrange a UPS collection for an extra charge. After the repair it comes back to you by UPS.

Pack the control unit shockproof and put the printed repair order in with it.