On 24/12/2010 13:36, Alan wrote:
In message , The Natural Philosopher
wrote


Half the car needed recoding and nothing worked properly when a dealer
swapped one battery i had.


After the power is removed (battery change) many cars only need to be
driven for a few miles to get the "computer" to re-learn the engine
controls and your style of driving. During this period the engine may
appear to run a little rough. The dealer probably just let the
apprentice thrash your car around the local roads for 15 minutes and
then charged you £50 to £100