Can’t reset inspection lights…does this mean SI battery replacement?

[Doobit]

Hi guys
As above, I can’t seem to reset my inspection lights by shorting pins 7 and 19 and waiting 5-10 seconds with ignition on. Does this mean I need to replace my SI battery. Is there a way to tell which SI battery my car will have Before I take it apart?

[E30Derbyshire]

Hi,

Try this link -

http://bavrest.com/technical-articles/bmw-e30-si-board