Well, I've joined the ranks of folks with funny electrical glitches to unravel. Yesterday the car worked fine, cruise worked, etc, etc. Today, right after startup, the ASR light and the ABS light came on and the cruise is no longer working. If I shut down and restart, the lights may stay off (about half the time), but the cruise still doesn't work.

I of course did a search, and it seems that this combination of warning lights usually means low voltage. I checked voltage at the battery and it was 14.7 volts at idle with lights and radio and climate control fan on . . .

Any other ideas? I don't have an overvoltage protection gizmo on this model (119 engine).

I don't know if this is relevant or not but the other problem I'm having is a leaky power steering reservoir, due to get resealed next week. I even wondered if PS fluid is getting into the alternator (since the reservoir is right above the alternator), but I would think the voltage would be low and I'd get a charging system light on if that were true. The serpentine belt looks fine (not oily).

Thanks,
Steve

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Steve
'93 400E

ON this type of problem use a scan tool for MB to access codes from the traction system & Electronic Accelerator computers.

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MERCEDES Benz Master Guild Technician (6 TIMES)
ASE Master Technician
Mercedes Benz Star Technician (2 times)
44 years foreign automotive repair
27 Years M.B. Shop foreman (dealer)
MB technical information Specialist (15 years)
190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)
Retired Moderator

There is a control box located at the rear of the engine compartment on the passenger side. Remove the black cover and inspect/replace the four 10 Amp fuses.

Good Luck,

RM92400E

Thank you both!

I'll check the fuses and if that's not the problem I will have my tech pull the codes.

Steve

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Steve
'93 400E

Fuses were OK -- good to know about yet another location of fuses!

Just got my car back from the independent tech I take it to. Checked codes and turned out to be the brake lamp switch. Replaced that, and also cleaned out massive brake dust accumulations in the ABS wheel sensors, and so far all seems to be well.

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Steve
'93 400E