Descended from the first motor car manufacturer, now a luxury German carmaker and part of the Daimler group.

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12
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1answer
3k views

how to optimize fuel consumption by changing the rear differential ratio?

Is it possible to improve the fuel consumption (decrease it) in my van by changing the rear differential ratio? I would like to optimize it for low-speed driving about 40 km/h (25 mph). Is it true ...
9
votes
5answers
837 views

Second hand car - Engine/Tyres/Etc

I am looking into buying a second hand car from a reputable Mercedes-Benz dealer (not just some dodgy salesman by the side of a road lol....). Anyway, there are a few maintenance/mechanical things ...
8
votes
1answer
45k views

I lost my Mercedes smart key, how do I get a new one?

If I lose a Mercedes smart key fob, how do I get a replacement? Is there anything I should do to prevent the old key from being used if it was stolen?
8
votes
1answer
752 views

how can I measure the amount of fuel injected into a diesel engine in real time in a purely mechanic pre-OBD vehicle?

This is a Mercedes-Benz 308D van, year 1992, model 602.316. Pre-OBD, no electronics of any sort, everything is purely mechanical. I would like to retrofit a system which would measure the precise ...
7
votes
2answers
253 views

'83 Mercedes 300D will not start when warm

The car runs great when first started, great pickup, etc. However, if I stop and shut off the engine, it will not start back up. At times I can pump the accelerator 5 or 6 times and then it will start ...
7
votes
1answer
26 views

I own a 1989 Mercedes 560sec that has rpm surges for no real reason

It happens once or twice a month, I could be doing 60 mph, and its almost redlining at 5000 rpm!. Once the vehicle gets to normal operating temperature, and I turn it off for a few minutes and turn it ...
6
votes
6answers
5k views

what can be the reason my old diesel Mercedes won't start?

The vehicle is a Mercedes-Benz T1 model 308D. The engine is an old Mercedes-Benz OM601.940 4-cylinder indirect injection 58 kW (79 hp) 2299 dm3 diesel engine from year 1992. It's not a turbodiesel! - ...
6
votes
3answers
30k views

Can I reprogram a used Mercedes smart key?

I want a new key for my Mercedes Benz and I've heard that you can get a used smart key for much cheaper than a new one from a licensed Mercedes mechanic. Can I reuse an already programmed Mercedes ...
6
votes
0answers
22 views

Mercedes ML350 M272 random misfire on cylinder 3 and 4

I have replaced spark plugs but am still getting misfire on cylinder 3 and 4. Sometimes it runs ok. and then other times theres no power.
5
votes
5answers
1k views

What good is it for an engine to have lower CCs and higher BHP?

I was watching "The Perfect Road Trip 2" by Top Gear, where at some point Richard Hammond is driving a Mercedes A45 AMG. He says that the car develops a whooping 355 BHP, and all that comes from a ...
5
votes
3answers
235 views

Does overheating that goes away under high RPMs indicate a sticky thermostat?

Sitting in traffic, my car's thermostat goes up to the red. If I put it in neutral and rev it, it goes up a tiny bit, then suddenly drops back to normal. Is that the thermostat sticking, or something ...
5
votes
2answers
2k views

Replacing the head gasket in a 1993 Mercedes 300ce

Is replacing the head gasket in a 1993 Mercedes 300ce, an expensive repair? I've been told it is better to just replace the engine all together. Is it a tough job for a backyard mechanic or a diy ...
5
votes
1answer
6k views

Mercedes start/stop system doesn't always kick in

We're the (humbled) owners of a 2011 Class B Mercedes with an inbuilt ECO start/stop system. As far as I understand this is how it's supposed to work: Gear in neutral. Press the brake pedal all the ...
5
votes
1answer
33 views

Trouble starting car, cold weather. MB A140 W168

So, I have a Mercedes-Benz, A140 W168. I moved to Finland about 18ish months ago which is when we bought the car 2nd hand. Last winter temperatures only went down to around -15C (5F) degrees, and ...
5
votes
2answers
2k views

What is the best way to remove a stripped head bolt that is deep in the engine?

One of the head bolts on my 1997 Mercedes C230 stripped during removal. It is a 12 point star, I think they made be called triple square splines. The others are about 4 inches long stretch bolts. ...
5
votes
2answers
2k views

How to determine if a Mercedes key is original?

I have made a duplicate of my car key ( 2001 E320) and I want to know if the key (reprogrammed used key) is original; manufactured legitimately by Mercedes or an authorized manufacturer. I didn't ...
5
votes
1answer
1k views

Does repeated turning on/off Xenon HID headlights harm them?

I've got Xenon headlights and my car has a feature which automatically turns the headlights on at night. Currently I'm hesitant to use the auto-on feature because the headlights turn on when I start ...
5
votes
0answers
55 views

1983 Mercedes Diesel - Loses Power Over Time

I picked up this car as a gift, and on day one drove it the 370+ miles home. After the first 160 miles or so I noticed that the car was struggling to maintain highway speeds. So I pulled over into a ...
5
votes
0answers
46 views

1993 Merc 300SE always stalling soon after startup, fuel pressure tests > 50psi

From the moment car starts to the moment engine stalls, which is about 40 - 60 seconds, fuel pressure is always above 50 psi. Can I safely conclude stalling is not caused by fuel system problems? I ...
4
votes
2answers
4k views

My car's steering wheel rotates to right when I lift my hands off

I have Mercedes E350 2009. When I hold steering wheel straight, car drives straight. When I lift my hands off, car and steering wheel tend to turn right. What could be the reason here?
4
votes
2answers
561 views

engine underpowered in idle - what can be done to improve a diesel engine power at low RPM just a bit?

There is an engine which is a bit underpowered when idling, it can not even keep the car moving on a flat road when in gear and idling at 700..800 RPM - see link. What can be done to improve its ...
4
votes
2answers
3k views

does a car normally continue moving at a constant speed when in gear and the foot is taken off the accelerator pedal?

I remember when driving a passenger car, when I took my foot off the accelerator pedal completely, but remained in gear, the car would normally continue to move at some low speed, different for each ...
4
votes
1answer
4k views

How to remove driver's side front door handle on a Mercedes Benz 2007 A-class W169?

I am stuck trying to remove the door lock barrel from the inner mounted door module on the driver's side front door of my Mercedes Benz 2007 A-class W169. I have undone the Torx T15 screw from the ...
4
votes
1answer
25 views

Mercedes Benz E300 BlueTEC HYBRID

Could anyone please tell me what BlueTEC HYBRID and Blue Efficiency mean and the pros and cons of those ? Are those better than BMWs Efficient Dynamics ? Common faults they undergo ? Maintenance ...
4
votes
1answer
528 views

Is this repair estimate for misfiring and fuel trim on a '98 Mercedes reasonable?

Just got a '98 Benz ml320 and two days later it cut off on me, twice, within about 5 minutes. I took it for a diagnostic. I'm wondering how overpriced this estimate is and possible ideas of best ...
4
votes
1answer
3k views

2008 MB C300 Will not start

My MB C300 will not start. I put the key in and turn it but nothing happens. The radio and internal lights do come on but not the car. The steering wheel is locked and can't put it on Neutral either ...
4
votes
1answer
532 views

Oil pressure decresases when I step on the gas

I have a 1982 Mercedes W123 with a 2L gas engine. I have noticed some weirdness with the oil pressure and want to know if this is an indication of a problem. Let's say I am driving at 60km/h and the ...
4
votes
1answer
1k views

How can I remove heating blower fan from the blower motor - Mercedes-Benz 308D van?

How I can remove the plastic fan from the axle of the heating blower motor? The vehicle is a Mercedes-Benz 308D van from 1992. The blower motor is a Bosch part number 0 130 007 027. I know that also ...
4
votes
0answers
18 views

I have 2001 C240 Mercedes. lately since the weather is getting cold, I have problem starting the car.

I have 2001 C240 Mercedes. lately since the weather is getting cold, I have problem starting the car. when i try to start the car, it makes no sound. a local mechanic says that the starter is ok. ...
4
votes
0answers
125 views

How to remove engine cooling fan from a W169 Mercedes A-Class

How do you remove engine cooling fan from A-Class Mercedes W169?
3
votes
2answers
172 views

my van is not able to drive over a curb

My van is not able to drive over a curb. Just a normal curb, that other vehicles are able to drive their wheels over, and mine is not. What might be the problem and how to fix it? It is a ...
3
votes
1answer
52 views

Building a custom car

I'm curious, is it possible (and how hard would it be) to build a custom car with an engine from a different brand than the transmission? For example, I'd get an old V12 Mercedes engine (with two ...
3
votes
1answer
2k views

Engine does not have enough power (and has limited RPM)

I have a 1982 Mercedes W123 (engine M102 - gasoline, 2.0L, 80kW, with Stromberg 175CDT carburetor). The car has been modified to run on LPG, the modification consists of adding a LPG tank, vaporizer ...
3
votes
3answers
5k views

How can I put down stuck rear sunshade on a 2006 Mercedes E class?

I've got a 2006 Mercedes e-350 with an automatic rear sunshade; until a week ago the sunshade worked fine, but now it's stuck up and I can't get it to come down by any means. The button to move the ...
3
votes
1answer
503 views

Strong vibrating over 60mph. 98 ML320

1998 Merc-Benz ML320 Some Back Story Had problems sense I got his thing. It had a slight radiator leak to start with that I was made aware of at purchase. Until now, that's all it was. Since ...
3
votes
1answer
209 views

Two Mercedes Electronic Keys - One Works As a Remote - One Works to Start The Car - How Can These Be Combined?

I just bought a 2005 Mercedes C230 and I have two Mercedes electronic keys - one works as a remote - one works to start the car - how can these be combined/programmed so they are both fully ...
3
votes
1answer
210 views

Strange “plastic” knocks near the heater

Recently I started hearing a strange "plastic-like" knocks right after starting the engine. EDIT. Here's the video: http://www.youtube.com/watch?v=i4mLn_-nUYA I also tried it with the engine off ...
3
votes
0answers
18 views

Mercedes veto Exhaust

Just got a new exhaust fitted, the part that goes from the front wheel area all the way to the back. And NOW there is a smell of exhaust fumes in the veacle, that seams to be coming from the vents. ...
3
votes
0answers
136 views

Evap. circuit malfunction on Mercedes Benz

I have a 2002 ML320 suv. The CEL is on, and the code is P0446. It states that there is something wrong with the evap. system circuit, specifically at the charcoal canister shut-off valve. I've tried ...
3
votes
0answers
690 views

Mercedes C250- Eco mode not working

i have a C250, W204, 2011 model, and i noticed that the ECO mode is not working anymore. When i turn the car on, the ECO button light is green and the ECO sign appears in the cluster. After 1-2 min, ...
3
votes
0answers
977 views

Mercedes Atego OBD2 live data codes

I have tried to connect an OBDII ELM327 adapter in Mercedes Atego. Somehow I managed to get it in that OBD2 connector. I can see that my adapter is receiving electricity. These are the PID's that I ...
2
votes
3answers
468 views

Mercedes C320 2003 tires & rims

I have a 2003 C320 Mercedes & am needing to replace the front 2 tires & rims. I have 255/35/ZR19 on the back so would a 245/45/R17 work for the front?
2
votes
2answers
332 views

What is the best way to determine if my hydraulic motor mounts are bad?

I am experiencing delayed forward movement at take off. I apply the accelerator nothing happens until it jolts forward. When I stop it lunges forward, which leads me to believe it is the motor mounts. ...
2
votes
2answers
1k views

unusual noise when switching into the second gear - other gears are fine

Almost every time I switch into the second gear, a quite loud crackle sound is heard shortly. It only happens when switching into the second gear, other gears are fine. I depress the clutch fully of ...
2
votes
1answer
1k views

How to reset the service reminder on a 2002 Mercedes-Benz CLK 200 Kompressor?

I have been looking for a few days now on how to reset the service reminder that keeps showing every time I start the car. I know the car repair shop can do this, but I would like to know how to do it ...
2
votes
1answer
65 views

How to remove the flooring system from Mercedes 614d minibus

I'm looking to convert a Mercedes 614d minibus into a catering truck. Can the floor system,rails which keep the seats in place, be removed as would like to make the floor lower. Many thanks.
2
votes
1answer
454 views

Volume of fuel reserve in MB E200 W211 2004

I wonder how much fuel is still left in the reserve tank when the yellow fuel reserve indicator lights up in Mercedes-Benz W211 E200 Kompressor (2004).
2
votes
1answer
221 views

Mercedes OM636: Can I Resolder Wire to Coolant Temperature Sensor?

The wire contact connected to the Coolant Temperature Sensor of my Mercedes OM636 (Boat engine same as Mercedes 170D, 180D) was corroded and got accidentally snapped off. Can I just solder this back ...
2
votes
2answers
452 views

Timing chain of a mercedes benz

Does the valves bend when the timing chain slips on sprokets, on a mercedes benz 2008 model C200 komp?
2
votes
1answer
757 views

Radiator Coolant Leak

I have found heavy leak of engine oil into the radiator of my 1996 Mercedes Benz (odometer 150000 mile). The workshop found the oil cooler pump damaged but we could not find a new one in the area. He ...