Ignition System/ Brake Light/indicator Light Fault

[whitty]

Driving down the a14 today when the abs and brake warning lights on rev counter came on (along with an infenal beeping noise !) pulled over to investigate

 

and there seems to be several faults,

 

fuse no 3 was blown replaced with another 5amp fuse blew immediately replaced with 7.5(i didnt have another 5 amp!) and the ignition came on !! ! and engine will not stop once running !

on further investigation i found all of the below

 

1 climate control not working intermittently when it works the indicators and brake lights also seem to work ok

2 when climate control goes off the indicators and brake lights stop working too

3 the abs light is flashing and on nearly permanently but does flick off occasionally

4 got home connected to vag -com (didnt expect alot but i thought i may as well try !) and vag com will no longer connect ( ign off?)

5 when ign is off and keys removed climate control pannel is on (although you cant change fan settings ect )

 

 

basically help!!!!

 

i'm thinking maybe faulty ign switch

 

im now about to go and check alternator is not over charging or something simple like earths ect but i doubt it very much

 

 

any ideas guys i'm properly flumoxed by this one

Edited February 8, 2009 by whitty

[whitty]

well surprisingly enough i found the fault!!!

 

and you will never guess what's caused it

 

 

it was that old favorite the aux heater by the looks of it the wires as they go into the plug have become corroded and are touching together, this was backfeeding the ign circuit

 

so tomorow ill be out with the soldering iron and all will be well again !