peaugeot 406 airbag warning light

You really need to get it on a Diag machine and find out which part is causing the light to flash. Could be the steering wheel module, the airbag itself (drivers or passenger) the ECU, the connectors under the seats for the seat belt triggers or the side airbags if fitted, or the wiring somewhere. The usual fault is the connectors under the seat, and you can SOMETIMES prove this by disconnecting them one by one, with the ignition off, then reconnect it, switch on the ignition and see if the light still flashes. If so, the connectors need to be cut out and the wires soldered back together, or get some Raychem heat shrink connectors which will solder them for you when you apply heat (safest with a hot air gun).

no nigel the raychem connectors are just crimps the outer sleeve shrinks you are thinking of the connectors used for the 306 wiring harness recalls which had solder inside which melted when heated having said that i personally think raychem connectors are very reliable

As you would have found if you had searched the group, the fix is to solder the connections under the seat. The people who service your 406 will know about this fix and it seems to solve the problem in most cases - certainly in mine.

also on the 406 sometimes if the wiring is a bit tight and you slide the seat all the way back the connector pops off the pretensioner

Sorry Jeff. Yes you're right. God, we had fun doing those 306 recalls. Seemed to go on forever! I agree that the raychems are reliable and a lot easier than trying to solder bare wires together under the seat!

not really a prob cos i'm good with a soldering iron(use a gascat though) myself but there was never much room was there as to the recall you always knew that you were gonna replace all of the wires didnt you plus you knew that further down the line the bumper was coming off again when the fan connection plug melted

i too am handy with a soldering iron. i had no idea that there a wires under the seats, DOOH! would not breaking and making connections i.e. cleaning the contact surfaces suffice or am i completly off track here?

either way, looking at these wires would be a sensible first option before going to the local service centre which has not a good rep.

thanks very much for advice, any further help is welcome.

mike

I also have an intermittent problem with the airbag warning light, usually happens after someone has adjusted the passenger seat. In the past I've managed to cure it by wiggling the wires under the seat a little but would love to know exactly how to fix the problem once and for all. A dummy's guide would be very useful. Or point me in the direction of a website with a step by step maybe?

Thanks

chris i'll be looking under the seat this weekend, will be glad to post the whole experience. mike

broke and made connections under both seats and guess what... no flashing warning light. thanks guys. should the problem re-occur and soldering is the best option i take it that you simply cut the wires (one connection at a time), bare the ends and clean, twist together and drop a bit of solder on to make the join. to finish insulate the bare wires as appropriate. thanks again for the fix.

mike

Great stuff.................but which wires did you break n make? There are a bundle under my passenger seat, daren't look under the drivers!!

Ditto, there are all the motorised seat adjusters plus seat heaters under there as well. How many wires are there in the plug/socket and what colours please.

All the wires to the seat and then on to the side air bag and the belt buckle are orange sleeved. The wires inside are usually blue and brown but they can be both yellow. So yes do one connector at at time, but also make sure the coloured wires are reconnected the same way.

sometimes side airbag wires are yellow depends on the year

sorry about that, under my each seat i found a yellow connector, with a white wire and a yellow/green wire. next is a blue connector with two wires both coloured orange/yellow. then a black connector with a grey wire and a yellow/green wire. lastly there is another black connector with two wires coloured orange/yellow. i breaked n maked each in turn, i don't know which action did the trick. hope this helps.