starter motor problem - P305300 open circuit terminal 50

Hi All , can anyone please help? Im getting the orange coil warning light and start stop de-activation warning come up when starting my A8 3.0 TDI D4. The car starts ok but sometimes it takes a second press as it stops turning over on the first one after a second or so. Tried clearing the fault but it comes up again when starting the engine. checked the battery, it has plenty of charge .

I ran an obd scan and P30500 code comes up with details of "starter solenoid short to ground/open circuit terminal 50" . Is this solenoid on the starter motor itself or on a fuse board elsewhere, i.e. necessitating replacement of starter motor or just a solenoid block?

Just some background to this - checked where the starter is located and the big earth return cable on the starter was loose and was arcing out , would this have cooked the relay ?


Thanks

Simon

Hi,
always worth changing the solenoid/relay.
Not sure where it is, it should be reachable..... (famous last words)

Arcing would not have helped the relay.

Hi mate. Have you found the solution? i've just got problem with my 2015 A8 4.0L.

Hi mate. Have you found the solution? i've just got problem with my 2015 A8 4.0L.

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Originally Posted by simonavo

Hi All , can anyone please help? Im getting the orange coil warning light and start stop de-activation warning come up when starting my A8 3.0 TDI D4. The car starts ok but sometimes it takes a second press as it stops turning over on the first one after a second or so. Tried clearing the fault but it comes up again when starting the engine. checked the battery, it has plenty of charge .

I ran an obd scan and P30500 code comes up with details of "starter solenoid short to ground/open circuit terminal 50" . Is this solenoid on the starter motor itself or on a fuse board elsewhere, i.e. necessitating replacement of starter motor or just a solenoid block?

Just some background to this - checked where the starter is located and the big earth return cable on the starter was loose and was arcing out , would this have cooked the relay ?


Thanks

Simon

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