Aston Martin Vanquish Mk1 airbag control unit repair

What is an Aston Martin Vanquish Mk1 airbag control unit?

In the Aston Martin Vanquish Mk1, the airbag control unit is the central control unit of the restraint system (SRS). It evaluates the signals from the crash sensors, decides within milliseconds in an accident whether to deploy the airbags and seatbelt pretensioners, and constantly monitors the entire system.

The unit is installed in the Aston Martin Vanquish Mk1 (2001 to 2007). If it detects anything unusual during operation, it switches on the airbag warning light. For you as the driver, this light is therefore usually the first sign of a problem in the system.

After an accident, the control unit stores crash data and locks itself. The system then continues to report a fault, even if everything appears to be fine on the outside of the vehicle.

Why is the Aston Martin Vanquish Mk1 airbag control unit defective?

The most common cause is crash data stored in the unit after an accident, even if no airbag deployed; a standard diagnostic tool cannot remove it. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion on the connectors, or voltage spikes.

The crash data then remains in memory, and the fault persists. Clearing the fault memory with a simple diagnostic tool therefore does not help.

Regardless of accidents, time takes its toll on electronics. Components lose performance, solder joints develop cracks and become cold, and moisture makes the contacts of the connectors corrode. In addition, there are voltage spikes, such as a weak battery or jump-starting can cause.

These signs point to a defect: the airbag warning light stays on, the fault memory cannot be reset, or the diagnostic tool cannot connect to the control unit.

Common error codes for Aston Martin Vanquish Mk1 airbag control unit repair

The codes of this unit concern internal component faults, communication faults with other control units, deviations in the power supply, and stored crash events.

Which messages appear in the fault memory depends on the particular damage. The entries below are codes known for this vehicle, each with its meaning.

• 0132 → Internal component fault during initialisation
• 0131 → Internal component fault, initialisation failed
• CFFF → Internal fault of the restraint system control unit
• 013B → Multiple crash events stored in crash memory
• 0128 → Vehicle configuration signal via CAN bus failed
• 0005 → Battery voltage too low
• 0006 → Battery voltage too high
• 0156 → Supply voltage between modules deviates

Error codes are read out with a diagnostic tool. A code alone cannot reliably tell you that the control unit itself is defective, because connectors, wiring or an airbag module can just as well be the cause. Only testing provides clarity here.

What part numbers are available for the Aston Martin Vanquish Mk1 airbag control unit repair?

You will find the part number on the label of the control unit, and it determines the exact version. Depending on equipment and year of manufacture, different numbers are in circulation within one model series.

The list below shows numbers that are known for the Aston Martin Vanquish Mk1. It does not have to be complete.

• 1R1314B321AC

Compare the number on your unit with this list. The comparison merely confirms that you have the matching unit in your hands. Whether there is a defect, on the other hand, is only shown by reading out the fault memory or by testing at Airbag24.

The route to repair looks like this: first, have the fault memory read out. Next, disconnect the battery. Then remove the control unit, and afterwards create a repair order online. Finally, send the unit to Airbag24. Testing, repairing and checking usually take 3–4 working days there. 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.