Since you got as far as the soldered board, look carefully at the (groups of six) round pins that protrude through from each switch. I have had to resolder these connections, driver and passenger seats, on EVERY one of my 700 cars for intermittant operation...and it has cured the problem 100% every time.

There is a separate 25A fuse for each seat. If you pull the appropriate fuse and work with the ignition off, you can resolder the board (requires desoldering most of the wires to get the white insulator off) while it's connected to the seat.

I've heard of people cleaning the switches but it seems to be on an annual basis...that's ok for an old car with parts you can't get or window switches that are relatively easy to pop out, but I didn't want to keep doing that on our 87 760T.

I would recommend you just get the new power seat switch assembly and replace the one in the car. The switches are snapped into the assembly but were soldered connections on my car...to clean them you'd have to desolder the switches, remove and clean and replace and resolder, with no assurance of the job holding.

A new switch assembly cost $200 about 4 years ago, Gosh only knows what it costs today, so look around.

By the way, IMHO the fumes from cigarettes and cigars do a lot to corrode the switchgear on these cars (also my used Saab 900T...I seemed to have fewer switch problems on the new 84 when I was the only one who drove it smokeless.) judging from the slimy brown deposits on the switches when I disassemble them....one of the reasons I now look for evidence of smoking in the car when I buy a new car...I won't buy a smoker's car at ANY price because I'm convinced I'll be doing too much electrical work on the car in the future. If you don't believe this, try disassembling a switch from a smoker's car (you won't have to wait long, they'll jump out at you!)!

Are you sure the red "stop" button didn't get pushed in, that locks the seat controls and is easy to overlook. I've had to clean switches with zero residue brake cleaner also.

steve m

'82 244 '89 760 glt wagon '93 850 glt