V70 2.4 L5-2.4L VIN 61 B5244S (2001)
From July 1st there will be a small change to the engine management software released for the turbo and 6-cylinder non-turbo vehicles as part of the ETS
upgrade. In the initial versions released in March, 2006, a change was made to the idle air adaptation to better compensate for aging and normal dirt
build-up in the throttle over time. Unfortunately, when the air adaptation was expanded, the initial value (starting point) was left as it was in the original
software.
This may in some cases mean that a vehicle with a dirty throttle and/or breather system would require some adaptation by the technician to eliminate a
surging idle before giving the vehicle back to the customer. This would also be necessary if the battery was disconnected or if any fault codes were
cleared from the ECM; clearing the fault codes also clears adaptation values. To aid the technician in expediting ETS upgrades, from July 1st 2006 the
ECM software component for these vehicles has the initial value for the air adaptation set to the median value, reducing the need for adaptation.
Upgrading to this later version may also help a customer who regularly disconnects the vehicle battery for storage.
