My ASD indicator, yellow, light is always on. I successfully spun both rear wheels in the snow recently and noticed that the red "ASD Activated" light did not go on.

Previous threads are read.

How can I diagnose this problem?

Thanks.

__________________
1996 (W210) E300D 86K - Traded in for a Lexus
1992 (W124) 300D 2.5 Turbo 202K - Sold
1983 (W123) 300D, 146K - Sold
1970 280S, 263K - Sold - Beginning of addiction

slowmoe,

I doubt this is the same issue as I could not believe I did this. Mine came on and I freaked out, stopped, read the manual and realized I must have shut it off inadvertently with the switch on the console. So I pushed the button and the light went off - everything is fine. I think the system defaults back to on if you shut the car off, which it sounds like you have done, so the next time it is on when you fire the car up. So, if yours is still off after restarting you may have a problem with the switch sticking in the off position or a blown fuse or something. Try manually cycling the switch and check your fuses. Any other electrical stuff ignoring driver/operator input? Good luck, Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)

Jim,

Sorry, I probably did not make this clear. I am refering to the locking rear differential, ASD, on my 1992 124 300D 2.5. I am not sure if you are or not.

In slippery conditions the rear wheels lock and a redlight in the center of the consul illuminates. The yellow "dummy light" next to the glow plug light is the one that is on continualy.

As far as I am aware I do not have a switch on the consule to over ride the ASD operation. Please let me know if I am mistaken. Thanks.

__________________
1996 (W210) E300D 86K - Traded in for a Lexus
1992 (W124) 300D 2.5 Turbo 202K - Sold
1983 (W123) 300D, 146K - Sold
1970 280S, 263K - Sold - Beginning of addiction

slowmoe,

My 1998 has ASD with a switch on the console in the vicinity of the window switches. My car has a huge yellow triangular symbol that lights up in the middle of the speedometer when the system engages or when the by-pass is engaged. I have no idea how the system is implemented on your car, but I would expect the by-pass to be on it somewhere.

I hope I am not leading you astray and will go search my CD for the W124 and see what it says. In the mean time, Good Luck. Jim

__________________
Own:
1986 Euro 190E 2.3-16 (291,000 miles),
1998 E300D TurboDiesel, 231,000 miles -purchased with 45,000,
1988 300E 5-speed 252,000 miles,
1983 240D 4-speed, purchased w/136,000, now with 222,000 miles.
2009 ML320CDI Bluetec, 89,000 miles

Owned:
1971 220D (250,000 miles plus, sold to father-in-law),
1975 240D (245,000 miles - died of body rot),
1991 350SD (176,560 miles, weakest Benz I have owned),
1999 C230 Sport (45,400 miles),
1982 240D (321,000 miles, put to sleep)