Alan_b, was it you who asked me about this at the pub today?
Anyway, according to my '95 owner's manual, the procedure is:
1. Set up the ACC the way you want it to come up every time you switch on.
2. Press and release the top-right and bottom-right buttons ("Defrost" and "Vent") simultaneously (the ACC and display LEDs will start flashing).
It also says "Note that you must wait at least 4 minutes after switching off the ignition before you can test the programmed functions". I think this is because if you fiddle with the ACC, it doesn't "forget" the current settings until the ignition has been off for four minutes.
To go back to the default startup settings, press and release "OFF" and "AUTO" simultaneously.
I've found that, being computer-literate, I initially tended to hold one button down, then press the other (like using a shift key). However, you need to press both buttons at exactly the same time or it won't work.
Anyway, according to my '95 owner's manual, the procedure is:
1. Set up the ACC the way you want it to come up every time you switch on.
2. Press and release the top-right and bottom-right buttons ("Defrost" and "Vent") simultaneously (the ACC and display LEDs will start flashing).
It also says "Note that you must wait at least 4 minutes after switching off the ignition before you can test the programmed functions". I think this is because if you fiddle with the ACC, it doesn't "forget" the current settings until the ignition has been off for four minutes.
To go back to the default startup settings, press and release "OFF" and "AUTO" simultaneously.
I've found that, being computer-literate, I initially tended to hold one button down, then press the other (like using a shift key). However, you need to press both buttons at exactly the same time or it won't work.