the car I am looking for info on is a 1991 190E 2.6 I was test relays in the external fuse box, after removing the three that sit next to each other I have lost the one to the extreme right, it looks like the six pin universal type but the guide pin is at the left side of the unit. can any one tell me the name of the unit so i can order one? thank you
Ps I thought it might be the ABS unit but when it came it was wrong.

I would take your VIN number to your closest Benz Dealer Parts Dept. He can look it up for you.
Anziani
'95 E420 129K
'97 CL500 136K

I did call them and they couuld not help.

Strange. Our Benz dealer's parts guys are great. Then give a pick-n-pull yard a shot. You can also sign up for EPC and track it down yourself.
Anziani

Here check this out..if you're talking about #4...looks like its unused.

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k

yes the R4 is the exact pin and pattern that my 190E has yet ours had a relay in it when they where taken out and so conveniently lost. I was just getting ready to ask any 190 owners to pull theres so I could get a number and order one thank you James for your help.

According to this thread it might be the OVP relay.

Fuse box layout question - Benzworld.org - Mercedes-Benz Discussion Forum

__________________
1998 C230 330,000 miles (currently dead of second failed EIS, yours will fail too, turning you into the dealer's personal human cash machine)
1988 F150 144,000 miles (leaks all the colors of the rainbow)
Previous stars: 1981 Brava 210,000 miles, 1978 128 150,000 miles, 1977 B200 Van 175,000 miles, 1972 Vega (great, if rusty, car), 1972 Celica, 1986.5 Supra

OVP relay is located behind the battery and is much too large to fit inside the fuse box.

__________________
Cruise Control not working? Send me PM or email (jamesdean59@gmail.com). I might be able to help out.
Check here for compatibility, diagnostics, and availability!

(4/11/2020: Hi Everyone! I am still taking orders and replying to emails/PMs/etc, I appreciate your patience in these crazy times. Stay safe and healthy!)


82 300SD 145k
89 420SEL 210k
89 560SEL 118k
90 300SE 262k RIP 5/25/2010
90 560SEL 154k
91 300D 2.5 Turbo. 241k
93 190E 3.0 235k
93 300E 195k