Thread: S40 V40: - Poor idle after battery change
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Old Apr 26th, 2017, 21:11   #10
V40Vinnie
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Last Online: Jul 23rd, 2018 14:50
Join Date: May 2016
Location: Canterbury/Kent
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It mentions somewhere in my Haynes Manual about a re-learn for all X40s. If i can find it ill write it down


ok the manual says, To allow the ECU to learn running values,
1. Start the car and hold as close to idle speed as possible until operating temperature is reached.
2. hold at 1,200RPM for approx 2 minutes.
3. take the car on at least a 5 mile varied drive to allow the ECU to finish the relearn process.

This should be sufficient for the ECU to relearn the running and idle values.

Last edited by V40Vinnie; Apr 26th, 2017 at 21:20.
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