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Battery Disconnect

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Old Apr 21, 2015 | 03:24 AM
  #1  
YorkshireAudiA3's Avatar
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Default Battery Disconnect

Hi,

I have an Audi A3 2.0 TDI 2004
Will disconnecting the battery remove any remaps on the ECU or will these be ok?
Also will this cause it to run a bit rich on petrol (lowering my mpg) until it 're-learns'?
Thanks
 

Last edited by YorkshireAudiA3; Apr 21, 2015 at 03:35 AM.
Old May 20, 2015 | 08:18 PM
  #2  
ImTheDevil's Avatar
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Posts: 11,670
From: Binghamton, NY
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If the car is "chipped" that reflash is hard-coded and will stay. The computer will go into relearn mode and will be figuring itself out, so for a short time it may not drive perfectly until it relearns everything.
 
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