Airbag sensor location

[drsb]

The airbag warning light has come on, and VCDS suggests it is the G284 passenger side crash sensor. Ross-Tech Wiki suggests some fault triage steps below, which I am keen to try myself. However, I can't easily find a reliable source of information for where the sensors are. The diagrams on 7zap aren't that clear, and I don't have a copy of the workshop manual. Can anyone help please.

Also, my understanding is that the safe protocol for investigating and removing airbag components is to remove the black (-ve) connection to the battery first. Anything more?

Thank you in advance.

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1) Check wiring and connections for G284
2) If connections are ok, change passenger side crash sensor (G284) with drivers side sensor (G283). If the fault change also, you found a faulty sensor. Replace it
3) If changing G283 with G284 does not change the fault, then check wiring between G284 and Airbag Control Unit.

[Jim Haseltine]

It's mounted on the back of the radiator support. Look in the engine compartment between the headlight and the air intake, there's a black plastic unit bolted to the back of the support at the top, it has (should have) a yellow wiring plug.
Driver's unit is fitted in the same place on the other side of the radiator.

[drsb]

Many thanks. Found them!

Swapped the sensors over to check whether it was a sensor fault or wiring fault (as per Ross-Tech) and now the fault doesn’t reappear. Go figure …

In case anyone is interested, the Part number for G284 is 4L0 959 651 and it’s the same on each side.

Douglas.

[KenH]

Had exactly same problem. Swapping from L to R didn’t prove anything as it was an intermittent fault which didn’t recur for (maybe) weeks after the fault code had been cleared. Eventually bit the bullet and purchased a new sensor (cheaper than I had imagined from Main dealer) and it only took 10 mins to install myself. That was back in Sept 2021 and no problems since.

[Jim Haseltine]

Airbag light came on last night, same thing - passenger side sensor G284. Eventually that is. First off this morning VCDS wouldn't connect to the car - interface was recognised but no connection, LED on the interface plug wasn't lit either. Fuse 12, one of the live feeds to the OBD socket was blown, which as I didn't have any mini fuses available meant going out and buying a selection box. Cleared the code, started the engine and the light was back on. Cleared the code again, swapped over the two sensors and similarly the fault has disappeared.

Additional: After two days the fault is back, this time on the driver's side so it looks like the sensor is faulty.