TCS light makes the car not start???

[tommycx]

Went to drive my car the other day, got in it as normal put the key in the ignition then waited for the lights to go out. All of the normal ones such as glow plugs abs etc did, but the traction control light stayed on.

I tried pressing the TCS button but nothing happened so i then tried to start the car with the light still on. The car attempted to turn over but just wouldnt start. Removal of the key then placing it back into the ignition turned all normal lights off including the TCS light and the car started perfectly fine.

Seriously confused on what the TCS light has to do with starting the car. Any idea's?


(also the car was scanned and has no error codes. I have recently replaced my crankshaft position sensor in attempt to remove code PO727 which has worked so far)

 

[tjkennero]

I've had the same problem on my Mk 1 Cupra. Seemed a random occurrence at first and then got more and more frequent to the point that it is nearly impossible to start now and can cut out while driving too. Did this happen to you?

Mine is currently with a VAG independent specialist who suspects the ECU may need to be replaced. Not nice ...

 

[andrewc2102]

Wouldn't mind betting this is linked with the MAF sensor, I took the connector off on purpose when mine was running and it makes the tractrion control light come on! might just be worth checking the connection.

 

[tjkennero]

Wouldn't mind betting this is linked with the MAF sensor, I took the connector off on purpose when mine was running and it makes the tractrion control light come on! might just be worth checking the connection.

Thanks Andrew. Would a poor connection explain the non-starting?

 

[MrC]

MAF seems to be a common theme here, see theis thread that is also doing the rounds at the mo -
http://www.seatcupra.net/forums/showthread.php?t=383133

 

[tjkennero]

Seriously confused on what the TCS light has to do with starting the car. Any idea's?

It could be related to the ECU, the test appears to be whether the diagnostic tools can communicate to the ECU when the light is on and the car is not starting.

See another thread with this problem (can't insert link until I've past my probation period, apparently ...)