I have a CLS 320 on loan whilst my car is in for minor damage after someone hit the rear bumper on my C230, but it has no Drivers Handbook with it and I keep getting the RED message about checking the tyres and resetting the Run Flat Indicator. The tyres seem to be ok but I wish to reset the warning indicator, "How do I carry out the operation". Regards. P.S. the CLS makes my 230 seem like a snail.