I have just gone through a period where my battery was dying in the last very cold spell we had. I ended up boosting the car several times. After one boost the check engine light came on. I purchased a new battery, a no-name serial->usb cable and downloaded Vag-Com (ver 409.1). The battery works well and I cleared the code from memory - it was a low voltage on the mass airflow, which I chalked up to the battery problem. I have read that I should do a recalibration on the throttle control module after I change the battery. Do I do this as a matter of course or just if there is a drive ability issue or another check engine light?
Thanks for any help