Originally Posted by
bluecoupe
I have a negative battery cable disconnect on my Limited, it was a dealer installed when new. Only downside I've found to using it (or disconnecting/removing the battery during Winter storage) is that the Navigation has to re-establish communication. Some get the BAS/ESP light, which is an easy fix by turning the steering wheel full lock right, then left, then centering it with the ignition in the run position. Fortunately I've never had to do this.
I just saw this thread and everytime the battery is disconnected for some time the pollution error codes are set and you have to go through the reset procedure, which can take some time if you do not do some of the motions prescribed. My pollution test is due in March and it is awkward as the car is off the road at that time, I shall see about moving the test date forward, you can do that as many cars are in the US for the winter and as such people cross the border behind in the testing and liable to get a ticket. With the cops having a Big Brother camera (ALPR) scanning all the license plates you get caught real quick, just ask my son. The Automatic License Plate Recognition infra-red camera does 3,000 plates an hour. it
It catches cars that are on the wanted list, cars with out proper licenses etc and in some jurisdictions cars that are not insured.