check engine light

[blue 95 530i]

Where is the unit to check it?

 

[Big Daddy]

The check engine light is decoded via the OBD port. You have to have a code scanner. (I think that is what your asking?)

 

[535iracer]

There is another way to check the code for OBD1 cars. If you turn the key to the "1" position and stomp the gas pedal down 5 times in succession the check engine light will blink a series of times to tell you what the code is. This worked in my '92 525i, should work in ur car, too... hope that helps.