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We still really do not know the extent of the problem.
The PBM is overheating ? What evidence is there of this? What does the car report on the dash ?
My IIDTool will only control the position of the PBM no diagnostics, but will probably clear any faults (could be an historic issue that has now resolved?) At worst we will see if/how/when the fault returns. (Your garage may not have diagnostics specific enough ?)
What is your plan ? To replace the PBM module ? / get it checked over ? / refurbished ? Does it need coding to the car ?
As previously said, it is quite a job:
1. Get it in the air
2. Release dampers and suspension and depressurize both sides - not sure why
3. remove exhaust
4. lower rear subframe (but only by 40mm in total !) (this is best done by getting some longer bolts rather than using jacks)
5. undo all manner of cables
6. Remove PBM module
At best this would be a day to get it out and a day to get it back in, assuming everything comes undone and can be reused.
Would have to do it on my drive, unless I get a decent outdoor cover for my treasured MG ! .
Experience is the only genuine knowledge, but as time passes, I have forgotten more than I can remember 
Volvo V70 P2 2006 2.4 Petrol 170bhp Estate SE
MG Midget Mk1 1962
Previous: L322 Range Rover TDV8 3.6 2008; L322 Range Rover TD6 3.0 2002; P38A Range Rover V8 1999
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5th Jan 2019 10:09pm
