Hazard Warning Light Switch & Relay
Hi all
Me again! I've removed the assembly from the dash. Simply pull off the facia then lever the switch unit out using a screwdriver. Go in from the top. Pull unit out and unplug harness.
For an A6 C5 the part number is 4B0 941 509 D.
Inside the unit (see attached pics) there are two relays the larger one controls the lights in the 'Hazard Warning' mode whilst the smaller one is used when switching the indicators left or right. This is the reason why Hazard Warning Lights still work when indicators do not.
It's this smaller relay, a Omron G8N-1, that is sticking and causing the Indicators not to flash. If you're feeling brave or you know someone who can solder/desolder double sided though board components, the relay can be changed at a fraction of the cost of replacing the whole assembly. (better for the environment too!)
RS used to stock this relay for around £5 but it is now obsolete. They have an 'alternative' but it is different and would therefore not fit in the circuit board. Maplin was a waste of time too. I have contacted Omson themselves asking where these relays can be bought but I'm not expecting a reply.
I'll keep at it and post any developments on obtaining the relays. After all £5 is better than what Audi would charge for a new switch unit! I hate to think how much that would be!
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