Replacement hazard switch

[Aidan]

why are people getting het up about a switch and fixing it ?

I've checked my stash and I have a used one here, taken out of the pickup when I swapped to SyncroSport dash

I can't check it works in a vehicle now but I can check it works basically, so I look up wiring diagram and can see that pin 49a is connected to the L and R pins when switch is ON

check with multi-meter, good contact with L, intermittent with R, if you wiggle it is better

So I carefully popped the back plate off, just using a knife to lift the sides over the tabs securing the back in place, and you can see the contacts on the back plate and a little grease and contact tracking on the contacts, especially on the R one



there are 2 small springs under the two contact plates in the switch part


I cleaned the contacts with contact cleaner and scotch pad, lifted off the contact plate and cleaned that and very slightly stretched the spring, gave everything a thin wipe of vaseline to replace the original lube/corrosion inhibiter and popped the coverback on and retested, low and behold perfect continuity is restored

So, imho, these are easy to repair, contact cleaner is a good thing especially after 30 years and garages who can't do this simple stuff, or who tried but lost the springs ? aren't to be trusted with old vehicles, they are used to the if in doubt replace and throw away the old school of mechanicing

it took me longer to take the pics and write the post than to service the switch, hope that this helps, and people don't take what garages tell you as true, get a £5 multi-meter and learn to test and fix stuff yourself, if you run an old vehicle it is worthwhile/essential

[callyspoy]

The OP states the switch doesn't fit in the whole and it works fine......I am lost

Where is it said "the OP has rightfully diagnosed it as almost certainly a switch fault"

The old switch fitted, but doesn't work.
New switch works, but doesn't fit.

So for thr sake of a few minutes potentially cleaning the old switch, then you could have a working fitted switch. That is all.

[Robsey]

On these 80's switches, it really is a piece of proverbial.

I always clean these simple switch units.
Very easy to do led conversions too.

No complex contact pads or micro-electronics to complicate matters.

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As for the O.P - I wonder if it wouldn't have been just as easy to swap the casing from the old switch onto the new one?.

[steveo9007]

The way i got round this was to buy the steering upper cowl that houses the newer version hazard switch, and moved it from the dash to the upper cowling simple. See Pic below

This is the hazard switch that was picture by the original O.P and the one on thew right in his Picture.

[Profscooter]

Managed to get the correct switch sent over from Audi Klaus, which arrived today, straightforward to fit, works properly and clicks nicely into the dashboard housing. Job’s a good un!

[mariner]

Resurrecting this! Having trouble with my hazard switch. Simply put, when it is clicked to on it doesn’t want to work.

I have taken it out (twice now) and given all connectors a good clean. Both times when it has been refitted it has worked correctly. Each time I have tested it several times, turning the ignition on and off several times. Both times I have walked away thinking I’ve cracked it.

Both times I have returned several hours later, tested it again, only to find it doesn’t want to work. Sometimes not working at all, at others flickering incoherently as if it’s trying but just can’t manage it.

Someone way back in his thread mentioned checking the earth point - where would I find this ? Is it in a standard place. None of this is affecting the indicators. Cheers.