1992 500SL OBD location - PeachParts Mercedes-Benz Forum

deportes · #1 03-19-2006, 07:42 AM

Where is the OBD physical location on a 1992 500SL , california car.

My 1992 300E had an OBD located next to the battery.

whunter · #2 03-19-2006, 06:18 PM

No OBD on pre 1996, only a proprietary MB diagnostic connector.

Points to check when buying a UK 91-95 SL500
http://www.peachparts.com/shopforum/mercedes-benz-sl-discussion-forum/65125-points-check-when-buying-uk-91-95-sl500.html#post402277

deportes · #3 03-19-2006, 10:41 PM

Is it possible to pull any codes out of this MB propietary connector?

deanyel · #4 03-19-2006, 11:34 PM

Quote:

Originally Posted by whunter

No OBD on pre 1996, only a proprietary MB diagnostic connector.

Points to check when buying a UK 91-95 SL500
http://www.peachparts.com/shopforum/showthread.php?p=402277#post402277

It is OBDII that became a requirement, in 1996. Before that there was OBDI which is on this car. And actually quite a few cars adopted OBDII early in 1994 and 1995. This car was right on the break between a 16 pin connector and a 38 pin connector both of which would be located in the rear passenger side of the engine compartment. If it's a 38 pin it would be covered by a round black plastic cap. In either case you can read codes with Arthur Dalton's code reader - you will find plenty with a search.

deportes · #5 11-17-2006, 12:33 PM

After I pulled the plastic cover

near the firewallI am not able to see any OBD, any ideas?

deportes · #6 11-19-2006, 02:29 PM

any responders that actually know if a obd exists in this car and where is located?

whunter · #7 11-19-2006, 08:23 PM

code reader info
Early 16 pin code reader info

Jim Forgione's DIY articles

On-Board Diagnostics (OBD) scanner tools for MBZs... & VWs too!
On-Board Diagnostics (OBD) scanner tools for MBZs... & VWs too!

deanyel · #8 11-19-2006, 11:10 PM

Clearly you have either a 16 or a 38 pin diagnostic connector. The Baum manual shows a 92 500SL (129.066) as having a 16 pin connector so that's probably what it is. It is probably covered by a black plastic cap and it should be in the rear of the engine compartment on passenger side. Perhaps if you posted a picture someone could spot it.

pcmaher · #9 11-20-2006, 09:30 AM

Although written for a W140, much of this applies to your car as well...

http://v12uberalles.com/pulling_codes.htm