christophercharlesgreen

Many thanks once again Greydog Dave for your enormous endeavours

Many thanks once again Greydog Dave . I haven't yet contacted my auto electrician friend but when I do I'm sure he will find your information useful and interesting. He will take a while to visit me because of ill health but when he does I will contact you. Many thanks and a happy new year.

Many thanks for your reply Greydog Dave, as always it is much appreciated and proves someone cares. It is true that the soldered batteries appear in the Haynes Manual but they are not in my instrument cluster. My auto electrician friend wonders if the subsequent model didn't appear in any manual. The VIN number is WBAHC22010BK95873 The Haynes Manual we've used is BMW 3&5 Series 1981 to 1991 ( up to J registration ) page 12 *5 Look forward to your reply

Many thanks for your reply Greydog Dave,it is always much appreciated. Since the symptoms seem similar to Kristian Lima, I think I will try to contact him.

This fault seems similar to what I've expirienced with the 1989 525i.My auto electrician friend thinks the board is powered by an independent small battery but does not know where it is located. Does anyone have any idea ? I've contacted Greydog a few weeks ago about this and although his advise was helpful, the firms did not get involved with older cars. Many thanks in anticipation of any suggestions.

Many thanks once again Dave. This will assist my auto electician friend. This information will help reassure him.

Many thanks for your help Dave. It is much appreciated.

Once again many thanks for your previous responseThe VIN of the car is BAHC 220 10BK 9587. My auto electrician friend says he is sure there is a service indicator battery because it states it in HAYNES service and repair manual ( 5 series 1981 to 1991 (up to J registration ) petrol Ref: ISBN 1 85960 236 3 and has all the symptoms of a flat battery. such as erratic Rev Counter, petrol gauge and speedo. It states this in the manual Page 12.4 Body Electrical Systems and the batteries have approx 6 year life. He wonders if there has been some sort of modification? The car reg. is G45 TOD

Very kind of you to respond Dave. This is much appreciated

is there a battery forthe service indicator computer on a bmw 525i 1989 year