Had any DTC’s show up before? Maybe certain ones could trigger this?
AccessPort / Stratified tune + STuned extended pops & bangs + custom pop and bang intensity / Boomba Racing short throw plate / DMB inlays / Mountune air filter / Mountune RMM / Mountune Recirc / Milltek Non Res Cat Back
I had this issue with my RS, when I took it into the dealership I was told “the RS has an algorithm built in to ECU to assess how hard it being driven vs oil temperature / condition”. Not sure how true this is, but that’s what I told. This happened to me at about 8000 miles, fortunately I changed the oil and filter at 6000 miles as an addition precaution and peace of mind, but I didn’t reset the service computer. When I explained this to the technician and showed him the service history, including the receipt for the Genuine Ford parts, he cleared the service warning from the computer and all was well.
However, please let me know if they tell you anything different as this would help with my current situation.
Not to worry you, as it may not be related, but 1300 mile after this issue my RS is currently sat at the dealership with a blown head gasket.
I had that after a spanking coming off a roundabout 2 weeks ago. Was in normal mode and it came up as the back end stepped out of line before stepping back in. Thought that it may be because being in normal mode the exhaust flap is closed (?)
Pulled over in lay-by. switched off ignition and switched on again. OK and no reoccurrence (so far). April 17 car with 5k on clock