MG ZS 2nd generation airbag control unit repair

What is a MG ZS 2nd generation airbag control unit?

In the MG ZS 2nd generation, the airbag control unit controls the entire restraint system (SRS). It reads out the crash sensors. In an accident, it decides within milliseconds which airbags and seatbelt pretensioners fire. If an accident has occurred, it stores crash data and locks itself.

The unit is installed in the MG ZS 2nd generation (since 2024). It works together with the sensors and the airbags as a network. The sensors report impact and deceleration. The control unit evaluates these signals and enables deployment.

It also stays active during normal driving. It continuously checks whether all parts of the system can be addressed. If it detects a problem, it switches on the airbag warning light.

Why is the MG ZS 2nd generation airbag control unit defective?

In most cases the cause is crash data that an accident has left in the unit. This applies even if no airbag has deployed. An ordinary diagnostic tool cannot remove this data. Other possible causes are aged components, cold solder joints, moisture with corrosion on the connectors, and voltage spikes.

Voltage spikes can be caused, for example, by a weak battery or a jump start. Moisture mainly affects the connectors. Aged components and cold solder joints, on the other hand, disturb the electronics inside the unit.

How to recognise the defect: the airbag warning light stays on permanently. The fault memory cannot be cleared. Or the diagnostic tool finds no contact with the control unit. In these cases, first have the fault memory read out.

Common error codes for MG ZS 2nd generation airbag control unit repair

The codes show where in the restraint system of the MG ZS 2nd generation a fault is present. They concern communication, the squib circuits of the airbags, the crash sensors or the crash data memory. A diagnostic tool reads them out of the fault memory.

The following codes are known for this vehicle, among others:

• B193E → Airbag trigger recording memory is full
• B1932 → Frontal deployment crash data stored
• U0151 → Communication with the airbag control unit lost
• B0001 → Driver frontal airbag squib circuit faulty
• B0010 → Passenger frontal airbag squib circuit faulty
• B0090 → Left frontal crash sensor faulty
• B0095 → Right frontal crash sensor faulty

A single code does not prove a defect in the control unit. The cause may just as well lie in connectors, wiring or an airbag module. Only testing brings clarity. Please enclose the read-out report with the unit you send in.

What part numbers are available for the MG ZS 2nd generation airbag control unit repair?

You will find the part number on the label of the control unit. It defines the exact version. Depending on equipment and year of manufacture, the numbers differ within a model series. Note down the number from your unit and enter it in the repair order.

Once the unit is removed, you can see the number directly on the label. With this information we assign your unit correctly. Whether it is actually defective only becomes clear from reading out the fault memory or from testing.

The path to repair is short. Have the fault memory read out. Disconnect the battery and remove the control unit. Then create a repair order online and send in the unit. Airbag24 repairs your own unit and sends it back. Checking, repairing and testing usually take 3–4 working days at Airbag24.

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.