Does your car have a clear and good emissions sticker on it? It is on the cross member atop of the right front headlight.

If so you could use that to help and if the manual is with the car, that might help.

Haasman

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'03 E320 Wagon-Sold
'95 E320 Wagon-Went to Ex
'93 190E 2.6-Wrecked
'91 300E-Went to Ex
'65 911 Coupe (#302580)