Loss of power, shudder, and hesitation

[cuddapah]

Originally Posted by STR3T

Whoa....How can I check for error codes via BT?

Try BMWhat on iPhone with OBD2 Car Diagnostic Reader Scanner.
https://itunes.apple.com/us/app/ivin...467343427?mt=8
http://www.amazon.com/gp/product/B00...?ie=UTF8&psc=1

Lite version is available to check if it is compatible with your car. BMWhat is available for Android also.
Please note this App failed to detect my Z4's engine ECUs. The developer informed me that the new update (released today 7/4) should be able to detect engine ECUs. I haven't checked yet.