Airbag control unit with part number A082M6446F

What does the airbag control unit A082M6446F do?

The airbag control unit A082M6446F controls the restraint system (SRS) of Lotus. It evaluates the crash event sensors, determines in an accident within milliseconds which airbags and seatbelt pretensioners to trigger, and monitors the entire system continuously.

Faults in the system are shown by the control unit using the airbag warning light in the instrument cluster. The light is therefore the signal through which the system reports its status.

After an accident, the unit stores crash data and locks itself. The next section explains why the unit can fail.

Why does the control unit A082M6446F fail?

The most common cause is crash data from an accident that remains in the unit, even if no airbag has deployed. Deleting it is often not possible with this control unit; if you would like it deleted, contact Airbag24 briefly before sending the unit in. Other causes include aged electronics, moisture at plugs, cold solder joints and voltage spikes.

In detail, the following points may apply:

• ageing of the electronics
• faulty solder connections
• wetness and rust at plug connections
• voltage spikes when starting, for example with a weakened battery or jump-starting

How can you tell that the A082M6446F is defective?

A defect first shows itself through the airbag warning light in the instrument cluster, which stays on permanently or only now and then. In addition there may be an error message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared. In a real emergency, airbags and seatbelt pretensioners may then possibly fail to deploy.

The warning light comes on directly after the ignition is switched on. If it stays on afterwards, have the restraint system checked, because the cause cannot be narrowed down without reading out the fault memory.

Which vehicles is the A082M6446F fitted in?

The control unit A082M6446F is fitted in these vehicles: Lotus Esprit S4 (1993-1996) and V8 (1996-2004); Lotus Elan M100 (1989-1995). The vehicle information serves as a guide; the removed unit with its part number is the benchmark.

The following models are assigned to this part number:

• Lotus Esprit S4 (1993-1996)
• Lotus Esprit V8 (1996-2004)
• Lotus Elan M100 (1989-1995)

First have the fault memory read out before removing the control unit; the result shows whether it is defective itself or whether a plug or cable is the cause. Then compare the part number on the label with this page. This only confirms that you have the correct unit in front of you.

For the same vehicles, we also repair control units with the part numbers A082M6576F.

How does the repair of the A082M6446F work?

The process begins with reading out the fault memory, and the log goes with the parcel. Then disconnect the battery and only then remove the control unit. At the end of this part, create the repair order online and send the unit off well packed. Processing at Airbag24 usually takes 3–4 working days.

There, the unit is checked, defective components are replaced where necessary, and a function test follows. If you want the crash data deleted, let Airbag24 know before sending the unit in.

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 A082M6446F get to Airbag24?

Sending the unit as a parcel is possible, as is a UPS collection for an extra charge. After the repair, the return follows by UPS.

The printed repair order also belongs in the parcel, and the unit must be packed shockproof.