W110 W111 W112 Sedan, BENZ AID - COMMON QUESTIONS AND ANSWERS

1988 300E Battery Drain

My car which went from no start to running great for a month after I put in your Ultimate Tune Up Kit has suddenly been experiencing a dead battery. I installed a new battery when happened but the first morning the new battery was dead. I checked the forum and found and followed directions for trouble shooting an 84 300SD battery drain. I recharged the battery, disconnected the battery ground cable and put a test light between the ground cable and the battery negative terminal. The light lit brightly indicating a current drain. I disconnected the alternator plug and again the light lit.

Chassis Model Number

W124

Forums

Body and Interior Specific Aid

84 300SD trouble starting

having trouble starting. This is my first (not last) mercedes. Its an 84 300SD. Hot or cold does not seem to matter. When you've waited for the glow plug light to disengage and try to start it either will or won't. Some times it starts right up others you can wait up to ten minutes. The battery appears to be fully charged. I can hear the starter gear engage. I'm leaning towards the ignition. I don't know if this is a common or easily fixed situation? The car has 267,000 miles shes just getting broke in:). I appreciate anyones suggestions. thanks benzbear68

Chassis Model Number

W126

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Diesel Engine Specific Aid

87 300SDL rocking at idle

Idle problem getting much worse.
Help if you can. My '87 6cylinder SDL is a little different than older models. However, my idle is driving me nuts. The car has been running great for years. Last month every once in a while when Hot the engine would Rock/Roll at idle. That idle problem got worse and worse. It is intermitent & used to only happen after the engine got to hot operating temp. Now it happens at all temps and is still intermittant. Sometimes it idles just beautifully. I've inspected the entire fuel system, replaced most of the hoses and clamps, replaced the fuel Pump. My IP is a little different than pre '87 Mercedes, so I don't have a dampner bolt and my ALDA looks different than older models.
Any suggestions on what to try and adjust?

Chassis Model Number

W126

Forums

Diesel Engine Specific Aid

300D dash lights fail after radio install

My old Becker radio in the 300d gave up, so I replaced it with something new. Everything seems fine except now it seems I have lost dash lights? Any advice would be appreciated.

Was having hard starts in the cold last week, the glow plug light went out. Ordered the clean=out tool and 5 new glow plugs. Job went smoothly with your instructions. Starts great again, Thanks!

Jonathan

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

Salvaged Spares

Hi, all; newbie here.

I'm not sure if I've selected the correct chassis number because MB use different classifications of their models over here in Europe; however, I should imagine that the principles would be the same, regardless of location... at least I hope so.

The problem I have is that my beloved Benz (E240 Elegance Tiptronic - 2597cc; registered November 2000) requires a new ignition switch. Enquiries made to dealerships have all quoted me a price of roughly $800 for a new switch and 'Green Key' (apparently needed to programme the new switch into the car's computer).

Here's the $64,000 question: can I use a salvaged switch (cost $40) and programme that into my car using a 'Green Key'?

Please... someone give me the answer I'm hoping for!

Chassis Model Number

W110 W111 W112 Sedan

Forums

Body and Interior Specific Aid

617 Turbo diesel Low Power at low RPM

I have a 1982 W123 with about 240,000 miles. It runs great at normal highway speeds.
The problem(s) are first at low RPM it takes a lot to get the car going, it can be floored and barely start to move. The other day my wife parked on a hill and when leaving it took a long time for her to move. (transmission is good, just replaced) Power is excellent when rev's are up, it will actually chirp the tires when shifting gears.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

Fixing Leaks (oil and coolant)1981 300cd

My 1981 300CD has some leaking issues. I have traced the coolant leak to the fact that the radiator has bulged along the upper edge and is leaking fluid under pressure from the joint between the tank and radiator.
Are these repairable? What else uses the same radiator or one close enough that I can cross reference to try to find a good used or inexpensive new rad?

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

Mercedes rear brakes locking up

Month ago My rear brakes went on fire! They told me since the pads were sticked to the disc I need to replace the calipers. Well I did it. I installed brand new calipers change the brake fluid and went driving. 2 miles later I was on fire again. Now they told me it is the cylinder or the booster, but I don't know what should I do!. I need help. please.

Chassis Model Number

W123

Forums

Body and Interior Specific Aid

1983 300D Just installed Optima 34R

A note on putting an Optima battery into a Mercedes. If you can dig up an Optima 34R instead of the standard 34, the posts will be in the correct position for the Mercedes cables. The battery comes with a couple of adapters. If you drill out the driver's side battery clamp stud and put a long bolt through the new hole, you can use the type 78 (looks like a 'C') adapter hold the battery in. You will need to add an insulator to the '+' cable as the OEM setup uses a cover on the battery.

Chassis Model Number

W123

Forums

Diesel Engine Specific Aid

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