Just back from dealers.
Plug it in - no faults
Check SMG pump + pressures - all OK
Only suggestion they had was that maybe Ive upset the car by running odd wheels - CSLs on front, M5 on rear - the M5 wheels stand almost 2" taller than the CSL rears.
Gonna swap back now, but the car wasnt doing its trick on the way home anyway.
Any idea lads? Warranty is out tomorrow!!
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