Some buyers are reporting damage to their cars resulting from
installation of the Crystal gear shift knob, blaming the product.
This is incorrect information.The gear shift knobs are tested and verified with
all BMW models we claim they are compatible with. If the
vehicle cannot shift into gear after installation, a short circuit in
the gear shift module under the gear shift knob has occurred. There are
three possible causes:
a) BMW dealership tried to install, following their installation
procedures instead of ours.
b) All vehicle batteries were not disconnected or the center gear
console removed before installation.
c) The ribbon cable was not in the correct position when the cable lock
The cable tabs have to fit exactly into the
before closing the lock. It is very important to
follow our installation instructions in detail and view our installation
videos before installation!