no numbers for R and T5 models? i notice a lot more S60 T5s than P80 T5s - the former are almost common, whereas the latter seem like unicorns.

Instrument cluster DTC are readable on both...OBD I and OBDII...except that obdII will need at least Vol-Fcr(special Volvo scan tool)...generic code readers will NOT work on anything other than ecu.

Scan with a) xiaotec "850 OBD-II" Android app, or b) Vol-FCR or volvo850diag programs on Windows.

Report here any DTCs for COMBI (ECU 51) and/or ABS (ECU 01).

For "850 OBD-II" app, post its Summary here -- it's the first part of the 850log.txt.

It sounds like you need three different things. fuel pump/sender R&R, new ignition switch, and gears for odometer. Its nice to hope one thing is wrong....with a volvo its going to be all three plus you will cause another problem when you fix these, so 4 total. The only thing hooked to position 1...