Is this correct?
As you say, valuable stuff. I'm putting together a dossier of Know-Hows for when my warranty expires. ATM I have to pay very high servicing charges to guarrantee my Rover warranty, but will revert to DIY after that.
I've studied all the posts in this thread and now hopefully understand how the resets are done. I wonder if I sussed why some people haven't got it to work when others have. Logically all Rover 75 models work the same in this, so it must be the way it's done that's important. Anyway, I'd be grateful if someone who really understands it will check through my notes? Here's what I've got so far.
The trick is to insert a length of insulated electric wire into connector 8 of the diagnostics socket and to earth the other end immediately after turning the ignition key to position 2. As the earthing takes place, begin counting the seconds as appropriate, then break the earth link. Aim for around mid-time range so you don't need stopwatch accuracy. Using a long wire means you don't have to fiddle with two connectors in the socket. Just hold the wire and earth it precisely.
You must earth the wire for differing time periods depending on what type of service/services you are resetting. There may be just one time session or it may require two sessions in turn.
If an Oil Service has occurred, use the Oil Service reset, then turn off the ignition. Next startup, an Inspection Service 15000 will be displayed as the next service interval. An Oil Service reset lasts 1 - 4 seconds.
If an Inspection Service has occurred, the Inspection reset is needed to bring up the Oil Service display at the next startup. Inspection reset lasts 8 - 25 seconds.
A Time Service reset also lasts 8 - 25 secs.
If an Oil Service reset and an Inspection reset are required, run an Inspection reset only. So, an Oil + Inspection reset is 8 - 25 secs.
If Oil or Inspection, together with a Time reset is needed, do the Oil/Inspection first (1 - 4 secs or 8 - 25 secs) followed by a Time reset of 8 - 25 secs. Do not move the ignition key between the two resets.
If you get any timing wrong it probably won't work. A wrong timing would be between 4 and 8 seconds, more than 25 secs or less than 1 second since none corresponds to a reset time period. I guess it uses a simple counting method.
A service display can only be reset when the 'excess' mileage is 1,000 or more (?) - Or is it - A service display can only be reset when there's been 1,000 or more miles since the previous reset.
(I don't understand either of these. Can anybody explain?)
That's it so far. Sorry if this seems pedantic, but in two years time, I'll need to go through all this again and I want to be sure.
Last edited by WaveGuide; 15-10-2005 at 19:04.