Mercedes-Benz Forum banner

1 - 8 of 8 Posts

·
Moderator
93 SL500, 95 SL320, 96 S320, 98 S500, 2002 E320 4Matic Wagon & A little 91 5.0 FORD Mustang
Joined
·
8,691 Posts
Discussion Starter · #1 ·
Was OBD II introduced in the last year of the W124s? or introduced first year of the W210s?

I'm looking to see if the E320 wagons in 1995 came with OBD II. If OBD II was available in the 1995, can someone tell me where it is at-better yet, post a picture of the location.

I'm not a owner E320 wagon, but would like to get one with OBD II.



Thank you,

Martin
 

·
Premium Member
About a dozen 1988, 1989, 1990, and 1991 sedans, wagons, 4Matics and 1 coupe
Joined
·
5,506 Posts
1996 was the first year for mandatory OBDII with a couple of exceptions. I don't think the 1995 W124 was one of them.
One example was the Dodge/Plymouth Neon. A completely new vehicle line for 1995, it made sense to build all the OBDII stuff into it since it would be continued on for years after.
 

·
Moderator
93 SL500, 95 SL320, 96 S320, 98 S500, 2002 E320 4Matic Wagon & A little 91 5.0 FORD Mustang
Joined
·
8,691 Posts
Discussion Starter · #4 ·
Since OBD II ii is sounding like it is not available on the late model W124s, how do everyone trouble-shoot check-engine light issues?

What tester is used for trouble shooting? Where is test point on the W124s?

Thanks,

Martin
 

·
Registered
Joined
·
2,227 Posts
There are diagnostic ports in the engine bay. You plug the special diagnostic computers into the ports and read the problems. The readers are not cheap. However depending on the type of ignition system employed you can read the codes with a cheap LED reader.
Here is JimF's page describing everything you need to know about the different MB systems and how to read them. Jim has kept some awesome notes on the website, hell of a lot of info.

K6JRF Auto Page link 1

K6JRF Auto Page link 2
 

·
Registered
anywhere from '52 300 to 1990 560SEL,and a '93300TE nothing newer, too much trouble....
Joined
·
425 Posts
so much for that info..........

it's all gone

dead links, never mind...........
 

·
Premium Member
2016 E350 wagon; 1994 E320 wagon
Joined
·
7,744 Posts
Was OBD II introduced in the last year of the W124s? or introduced first year of the W210s?

I'm looking to see if the E320 wagons in 1995 came with OBD II. If OBD II was available in the 1995, can someone tell me where it is at-better yet, post a picture of the location.

I'm not a owner E320 wagon, but would like to get one with OBD II.



Thank you,

Martin
the M104's used in 94+ E320's have 'blink codes' that can be read with a very simple circuit. black banana plug to push button to green or yellow banana plug to 12V LED to red banana plug, like so.



pin 16 of X11/4 is power, pin 1 is ground, so plug the red and black plugs in respectively. plug the yellow/green plug into the socket of the module you wish to read (pin 8 is the engine ECU, pin 6 is the SRS, etc). turn the ignition on, press button for about 3 seconds, release, and the LED blinks out a count. 1 blink == no error. if you get anything other than 1 blink, press the button another 3 seconds, and see if you get another code, repeat until the codes repeat. pressing the button for about 8-10 seconds resets the codes on that CU.

the codes are listed in the W124 service manual under the appropriate control unit, or here http://www.w124performance.com/docs/mb/diagnostics/DTC_List_W124_M104.pdf
 
1 - 8 of 8 Posts
Top