On 15/06/2020 12:13:27, alan_m wrote:
On 14/06/2020 20:48, Dave Liquorice wrote:
https://www.ebay.co.uk/itm/OBD2-Auto...Saver-OBD-12V-
Battery-Replace-Tool-Extended-Cable/292763616836?ssPageName=
STRK%3AMEBIDX%3AIT&_trksid=p2060353.m2749.l2649


Yes you definitely need one. If you remove the battery your car's
computer will delete all its programming and you will never be able to
start your car again without getting it back to the main dealer for a
repair costing maybe £1000!

Please name the car that does this. All that I have come across work
perfectly well after removing the battery. The major pain is resetting
the radio etc.

You are now powering your whole car through those two little pins on the
OBD connector. You will possible do more than £5 in damage if it draws
too much current.

That depends on the wiring, but while that may be a concern, the current
draw with everything turned off would normally be measured in mA.

If you believe otherwise provide the evidence.