Having hard time finding old stories... have my coupe door card off, doing a few repairs. Want to update the cosmolene in there. Of course the stuff stinks, so I’d like to keep the door open overnight. As I recall (and can hear clicking), the door has a relay that allows the seats to be moved by releasing vacuum.

Doesn’t that relay get hot or something? Is it bad to leave the door open?

I recall reading of this before the days of when I had a coupe...

Thanks!

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

If in doubt you can always disconnect the battery

Ok I looked at the wiring diagram and the Vacuum switchover valve for the backrest locking is live all the time(even with ignition key off) when the door is open so I think it's better to disconnect the battery or pull fuse #2

None of my W123 coupes had any sort of relay in the seat back rest vacuum locks .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

I think the relay is behind the glovebox or near there.

__________________
1985 300CD, CA
172 Anthrazitgrau/Palomino 154

1985 300TD, CA
040 Schwarz/Palomino 154/3rd row seat

1985 300TD, CA
473 Champagner/Palomino 154/Cargo cover

Correct. Question was if there was a thermal issue with the relay, if the doors were left open.

__________________
Current Diesels:
1981 240D (73K)
1982 300CD (169k)
1985 190D (169k)
1991 350SD (113k)
1991 350SD (206k)
1991 300D (228k)
1993 300SD (291k)
1993 300D 2.5T (338k)
1996 Dodge Ram CTD (442k)
1996 Dodge Ram CTD (265k)

Past Diesels:
1983 300D (228K)
1985 300D (233K)

I think there is a a thermal issue so I don’t leave my doors open for a long time without disconnecting the battery.

__________________
1985 300CD, CA
172 Anthrazitgrau/Palomino 154

1985 300TD, CA
040 Schwarz/Palomino 154/3rd row seat

1985 300TD, CA
473 Champagner/Palomino 154/Cargo cover