MG IM5 1st generation airbag control unit repair

What is a MG IM5 1st generation airbag control unit?

As the central control unit of the restraint system (SRS) in the MG IM5 1st generation, the airbag control unit receives the signals from the crash sensors and evaluates them constantly. If an accident occurs, it determines within milliseconds which airbags and seatbelt pretensioners deploy. At the same time it monitors the condition of the whole system and makes faults visible via the airbag warning light.

The control unit is installed in the MG IM5 1st generation (since 2025), where it is connected to sensors, airbag modules and seatbelt pretensioners by fixed wiring and continuously checks their feedback during operation. If an expected response fails to arrive or a value deviates, this is shown by the warning light in the cockpit.

If it has registered an accident, the control unit stores crash data and locks itself.

Why is the MG IM5 1st generation airbag control unit defective?

In most cases the cause is crash data that an accident has left in the control unit, even if no airbag was deployed; a standard diagnostic tool cannot remove it. Ageing electronic components, cold solder joints, moisture with corrosion at the connectors and voltage spikes are also possible causes.

A single accident is therefore enough for the unit to store data that cannot be reset with an ordinary diagnostic tool. That is why the warning in the cockpit remains, even though the vehicle may look perfectly fine from the outside.

Electronics also age over the years, solder joints lose their contact, and moisture attacks the connectors. A weak battery or a jump start can also produce voltage spikes that damage the unit.

Three observations in particular point to a defect: the airbag warning light stays on continuously, the fault memory cannot be cleared, or the diagnostic tool cannot establish a connection to the control unit.

Common error codes for MG IM5 1st generation airbag control unit repair

In the MG IM5 1st generation, the reported codes point to communication faults, to faults in the firing circuits and to disturbed crash sensors. In addition there are entries relating to stored crash data and to the memory for deployments.

Below are the codes that appear particularly often for the MG IM5 1st generation airbag control unit, each with a short explanation.

• B193E → Deployment record memory is full
• B1932 → Frontal deployment data record stored
• U0151 → Communication with the restraint system lost
• B0001 → Driver front airbag, firing circuit stage one faulty
• B0010 → Passenger front airbag, firing circuit stage one faulty
• B0090 → Left front crash sensor faulty
• B0095 → Right front crash sensor faulty

Such codes are read out with a diagnostic tool. A single entry alone does not reliably indicate a defective control unit, because connectors, wiring or an airbag module may just as well be the trigger. Only an inspection provides clarity here.

What part numbers are available for the MG IM5 1st generation airbag control unit repair?

The part number is printed on the label on the unit, and it determines the exact version. Within a model series the numbers differ depending on equipment and year of manufacture.

No verified list of numbers is available for the MG IM5 1st generation. Please therefore read the number from the label yourself and enter it when you create the repair order; based on this information your unit is assigned to the matching version.

Whether the unit actually has a defect only becomes clear from reading out the fault memory or from the inspection. Here is how to proceed: first have the fault memory read out, then disconnect the battery and remove the control unit. Afterwards you create a repair order online and send in the unit. At Airbag24, checking, repairing and testing usually take 3–4 working days.

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.