Oil Level Sensor
Not hard but you need to make your own gasket for the bottom half of the oil pan.
Is there any chance your battery might be low? Prior to replacing my battery I got several warnings that my oil level sensor was defective. They went away as soon as I changed the battery. Other symptoms are unexplained loss of 'sync' on windows and sunroof and BAS/ASR messages. Any battery over 4 years is suspicious although some owners report 7-8 years.







