Check engine light

Tiny
MICK BARRON
  • MEMBER
  • AUDI A4
Does disconnecting the battery (2003 Audi A4)
reset the computer, thus turning the check engine light off?
Thursday, April 19th, 2007 AT 2:26 PM

1 Reply

Tiny
BACKYARDMECHANIC
  • MECHANIC
  • 337 POSTS
Disconnecting the battery will extingush the check engine light however the cars computer will have to re-learn it's operating parameters. Driveability may be effected untill the car re-learns it's operating parameters. Another draw back is if the condition that caused the light to come in the first time still exists, the light will only come on again.
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Thursday, April 19th, 2007 AT 6:02 PM

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