New battery has it got magical properties

[robb]

Hi guys just a question about changing batteries .I had to buy a new battery as the old one discharged twice in the cold weather . After I changed the battery my courtesy light which didnt work started to work also my rev counter which didnt work started to work intermittentl y just wondered if there wasnt enough charge in the old battery would this cause the light and rev counter to not work or is it coincidence .thanks in advance ....Rob

[mjb]

If it's a D9 the chances are you've inadvertently caused the BSI to reset itself and start working properly again

[robb]

Thanks MJB its a D8 will the BSI reset still occur?

[mjb]

Thanks MJB its a D8 will the BSI reset still occur?

No, as you don't have a BSI

I'm at a loss to explain this, especially the courtesy light which is completely electrical (not electronic) on the D8. The rev counter just relies on a feed from the engine ECU too, which is unlikely to cause such a problem... Even (to my recollection) the wiring is completely diverse for the light and rev counter bar about 3 foot of the main interior harness around the ventilation distribution area

[robb]

Thanks MJB no BSI one less thing to worry about at least the courtesy light is working although the rev counter is bouncing around like a 406 fuel guage

[GeordieBoy]

Thats French cars for ya, the wiring is amazing.

[FarmerPug]

its odd wiring but it seems to fix itself after a while. I wouldnt actually blame the wires, i blame the boxes at the end of the wires and the connectors holding these wires in place.