On 01/09/2016 09:20, The Natural Philosopher wrote:
On 01/09/16 09:12, Scott M wrote:
harry wrote:

NOT a good idea on some modern cars.
The on board computer may loose it's program if disconnected.

Is there, literally, anything you're not wrong about?

Well to be fair SOME onboard computers may lose SOME of their
*configurations*


Examples a car radio anti-theft kicking in and needing the code to be
re-entered.

*some* immobilisers kicking in, and the car won't start

*some* other systems losing their marbles. ISTR that sometimes window
warning lights come on until various resets establish where 'window
closed' is..



Like the Renault I was working on the other week, procedure for
resetting the *fuse box* involved opening the window and turning on the
sidelights (with the door shut ) while re-connecting the battery.
Not jumping through the required hoops left the wipers permanently on
and no headlights... Genius
Can itself ran fine though