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Hi there, went for a drive in our T5 this morning and ASR light came on after about five mins driving and van cut out, managed to pull over just off road. Wouldnt restart ASR light on and no engine management light. Checked all fuses didnt seem to be none out. Tried to get it going for about an hour but no go then the engine management light came back, ASR light went off and she started. Got her back home pulled on drive turned her off, tried to start her again and same happened - ASR light back on no engine management light and she wouldnt start! Left her for a couple of hours, looking on ebay for T4 lol, went back to her and she started no problem.
Is this the ECU ??
Cheers
 

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I don't recall the symptoms being common ones, and as you probably know, ASR involves an interaction between the ABS controller and the engine management controller (because ASR can modulate both braking and engine power), so it could be the former or the latter (or something else!).

You will almost certainly get more meaningful information by having the diagnostic codes read.
 
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