That was the 156 problem with the 'Lights On' warning light failure. The diode (located behind the warning light in the Rev Counter) failed and allowed a reverse current to flow to the rear light. I think it is physically impossible with the 159 Canbus system.Not sure if it's the same electrics as the 156 but mine used to do that. One of the rear lights was staying on VERY dim after turning the ignition off. Apparently there was a problem with the 'light control unit' (I think that's what it's called). Had that changed and, hey presto, no more problems
That's interesting. MrsJim's Picasso's battery is still the original after 9 years which is surprising given the cheap materials it is built built from. That's located under the front seat. You might be on to something there.As an aside.The longest life I ever got from an original battery was about 9 years on my old Alfa 164 which had the battery in the boot away from the higher temparatures under the bonnet which generally conspire to 'age' batteries prematurely.
On my car they switch off after about 20mins.I noticed the other day that when my kids turned the rear interior lights on while I was driving along that when I came to park up the lights stayed on. ...... I even left it a good 10 to 15 minutes and checked again and they were still on. Is that normal?