Well, this is a common misconception. The gregariousness of your quandary is explicitly lacking in content and formidable specifications. Your question dates back to the ancient times of the Roman Catholic persecutions and gladiatorial slayings of many sorts. Which is why you would be best advised to pursue your quest of attaining adequate knowledge, outside of your current quantum stated far limited schooling thus far in the automotive field, at a suitable mechanic repair facility in the vicinity of your current resident.
This advice, if well heeded, will support such further quests in the field of knowledge and skill of which you are certainly lacking.
reset service engine light on BMW 325
The light shows that a service is due It is distance or time related.
Engine Warning Light
you need to have the car's computer scanned to see what codes are making the service engine soon light appear.
SES = Service Engine Soon
The engine computer has detected a malfunction and set a code.
go to your dealer and they will fix it for you.
oil light on when engine off
Service due. Unable to inform your BMW Service automatically. Contact your BMW Service Centre.
You need to scan the codes. Check with Autozoen for FREE scan.
Who to Change engine check light bulbs on a 1996 BMW 318i?
engine light