Bulb failure - random warnings after replacing bulbs with LEDs

[rosso rocket]

I switched my front side-lights from filament bulb to a set of CANbus error free LED lamps...seem to be OK in use, but occasionally I get a 'bulb error' on the display accompanied by a warning tone, after a short while it goes. As I say, the LEDs work fine in normal use, just on start up.

Mines a 2007 MY A3 8P.

Is there anything I can do to stop this from occuring?

Many thanks.

[Mike Foster]

NO - unless you change back to the normal bulbs or get a new battery !!

Canbus error free bulbs cannot be guaranteed to not show a warning. I put mine in 18 months ago and every cold(ish) morning I get an error on the nearside one. Switch off the engine and re-start and after a few seconds the warning goes out.

My battery is pretty knackered and sometimes only shows 10.2 volts in a morning and at that voltage the current is not high enough (even with error free led's) to tell the computer that all is ok. Hence you get a warning. After starting the engine for a minute or so the battery gets a boost up to a more acceptable level and, after switching off and therefore removing the error, when you start again all becomes ok.

[rosso rocket]

Thanks Mike.....I'll get the battery changed as winter prevention job this weekend, in any case, and we'll see if this does the trick!

Thanks again for the reply.

Cheers