15:th-Feb-2019, 11:00:15
(15:th-Feb-2019, 08:56:46)fd1985 Wrote: hi I have a J 1.4, how did you do this? I couldn't get hold of an OBDII reader or find a garage to do it.
Turn on the trip computer functions you mean? You can't do it with a generic OBDII reader, you need a Vauxhall specific one, it's called Opcom (there may be others, I'm not sure, but this is what I use). You can get a cheap Chinese clone of it on eBay.
If you have the smaller screen, you can't get too many functions, but you can get range, average MPG, instant MPG and average speed - I think that's it.