What are the common problems with Mercedes diesels?

Here are some common problems that affect many Mercedes-Benz diesel models including E350, ML350, GL350, R350, Sprinter, R320 CDI and BlueTec models. Common problems Diesel Particulate Filter. As Mercedes DPF traps and holds soot, with time it reaches a point when it needs to be ‘emptied out’. This is done by regeneration.

Why does my Mercedes diesel engine not start?

However, if the engine is not running correctly automatic regeneration will not be started. Some of the possible causes are a faulty temperature sensor, swirl flap motor or EGR valve. Also, make sure you only use approved engine oil. Wrong engine oil can cause excessive soot build up.

Are there any problems with the Mercedes DPF?

It is essential to be familiar with the usual weak points. Here are some common problems that affect many Mercedes-Benz diesel models including E350, ML350, GL350, R350, Sprinter, R320 CDI and BlueTec models. As Mercedes DPF traps and holds soot, with time it reaches a point when it needs to be ‘emptied out’.

Which is the most advanced Mercedes diesel engine?

Diesel Mercedes-Benz cars, SUV and Sprinter vans equipped with BlueTEC engines are one of the most advanced diesel engines in the world. High-pressure fuel injection system and variable geometry turbochargers ensure optimal combustion.

What does the Check Engine light on a Mercedes mean?

Mercedes-Benz owners may notice the check engine light plus P0170 and P0173 codes. In theory, these two codes mean that the fuel mixture is too rich or too lean. Most of the time these Mercedes-Benz fault codes are caused by a defective .

What causes a diesel engine to run bad?

Common Smoke & Power Problems: Engine runs bad – gummed injection system 5. Common Smoke & Power Problems: Engine runs bad – excess carbon buildup 6. Common Smoke & Power Problems: Engine runs bad – low fuel flow to injections 7. Common Smoke & Power Problems: Engine runs bad – poor compression 8.

What causes soot build up in Mercedes engine?

Wrong engine oil can cause excessive soot build up. Luckily, the regeneration process can be initiated manually, using an appropriate diagnostic tool. In most cases, this will purge a clogged DPF. Mercedes, like many diesel cars, uses a DPF Exhaust Pressure Sensor to determine how much does the DPF restrict the exhaust flow.

What happens when a Mercedes Benz goes into limp mode?

When a Mercedes-Benz goes into limp mode, it only operates in second gear and reverse only. When you put it in gear, you may also feel a bang as transmission engages. The first thing you should try is to check the transmission fluid level. The transmission has a dipstick tube but with no dipstick in it.

What to do about a clogged DPF in a Mercedes?

Luckily, the regeneration process can be initiated manually, using an appropriate diagnostic tool. In most cases, this will purge a clogged DPF. Mercedes, like many diesel cars, uses a DPF Exhaust Pressure Sensor to determine how much does the DPF restrict the exhaust flow. More restriction equals more clogged up DPF.

Where is the fuel regulator on a Mercedes CDI?

The Mercedes CDI series of diesel engines have an electronically controlled fuel pressure regulator mounted on the end of the fuel distribution rail. This controls, as the name suggests, the fuel rail pressure.

What are the most common Mercedes Benz transmission problems?

Top 5 Mercedes-Benz Transmission Problems. Won’t come out of Park gear due to a defective brake light switch. ( DIY How to replace the Brake Light Switch) Continue to read if you would like to learn how to troubleshoot your Mercedes-Benz transmission yourself and where you should start. 1. Check Fluid Level

What are the specs of a Mercedes Benz 320 CDI?

Browse Car Specifications… With a fuel consumption of 9.3 litres/100km – 30 mpg UK – 25 mpg US (Average), 0 to 100 km/h (62mph) in 8.7 seconds, a maximum top speed of 138 mph (222 km/h), a curb weight of 4894 lbs (2220 kgs), the R Class (W251) 320 CDI has a turbocharged V 6 cylinder engine, Diesel motor.

When does the COMAND system shut down Mercedes Benz?

I persisted with MB technical support; here is how they replied: The E350 has an on-board system which continuously monitors voltage. The Comand system is apparently one of the largest electrical loads on the vehicle. When the level goes beyond a certain threshold, Comand is intructed to shut down.

Is the Mercedes-Benz E-350 a good car?

Recently in terrible accident with semi truck on I-10 just outside of Phoenix, I believe the E-350 2008 not only save our lives but we all walked away without series injury. Looking to buy same model and year again. Great highway gas mileage with power. “Finest engineering MB car….” I owned 2008 E-350 class.

Why does my Mercedes Benz drop itself when parked?

This week we are troubleshooting a Mercedes-Benz S-Class that lowers itself when parked. Mercedes-Benz lowering is intermittent. In some cases, the car will drop itself overnight but not always. If the vehicle is parked on an incline or downhill the raising or lowering when parked may stop. There are many possible causes for this malfunction.

What did Edmunds say about the Mercedes E class?

Edmunds’ expert review of the Used 2008 Mercedes-Benz E-Class provides the latest look at trim-level features and specs, performance, safety, and comfort. At Edmunds we drive every car we review, performing road tests and competitor comparisons to help you find your perfect car. Read the full in-depth review of the Used 2008 E-Class at Edmunds.

What kind of suspension does Mercedes Benz E350 have?

The E350 sedan can be equipped with a no-cost Sport Package that includes 18-inch wheels, a lowered sport suspension, blue tinted glass, different wood trim and dual chrome tailpipes. The E550 includes the Sport Package and adds semi-active air suspension, leather upholstery and four-zone automatic climate control.

What was the first Mercedes Benz CDI engine?

This engine was installed on Mercedes-Benz Sprinter (W90x), Mercedes-Benz C-Class (W203) Mercedes-Benz E-Class (W210). OM628. 1999-2010. It was the first V-engine in the CDI lineup. It boasted 8 cylinders, 4 liters displacement, 560 N·m torque and power of 250 HP.

How much fuel does a Mercedes C class C220 use?

Either is not a problem for the Mercedes-Benz C220 CDi turbo diesel. It is a real fuel miser that can consume as little as 5.5 litres/100km without trying too hard. Say what! That’s right, the Benz oiler is as economical as a small 1.3-litre econobox but there the similarity ends.

Is the Mercedes C220 CDI a good car?

Buy with confidence; all Mercedes-Benz Certified Pre-Owned vehicles come with a factory backed warranty, 100 point safety check, comprehensive service history and 24hr roadside assistance. How about Brizzy to Sydney – good too eh? Either is not a problem for the Mercedes-Benz C220 CDi turbo diesel.

What’s the fuel pressure on a Mercedes Benz?

A great and affordable gauge that we have used in the past is this Actron Fuel Pressure Gauge which works on Mercedes-Benz cars. Turn the engine off and connect this gauge to the Schrader valve test port shown in the picture below. Start the car and you should be able to get around 60 psi.

Where is the exhaust pressure sensor on a Mercedes?

In most cases, the sensor will stop operating. This will give a ‘check engine’ light and a corresponding code. This usually triggers limp home mode, so you can expect a noticeable loss of power. DPF exhaust pressure sensor is not expensive. It is located underneath your Mercedes, next to the DPF. It is relatively easy to replace.

How to reset adaptive shifting points on Mercedes Benz?

This procedure will reset the adaptive shifting points in your Mercedes-Benz automatic Transmission Control Unit (TCU). These simple do it yourself instructions take less than 5 minutes. No tools are required to perform this procedure and make your Mercedes-Benz shift like new. Try this if your car has been shifting sluggish recently.

What causes a Mercedes E220 Turbo to lose power?

Mercedes E220, E270 & E320 Turbo Actuator Fault. Common problem with Mercedes E220, E270 & E320 (W211) years 2002 onwards. Internal malfunction of the turbo actuator causes the engine to lose power intermittently, the fault will normally rectify itself if you turn off the engine and restart after it has cooled down.

What should I do if my Mercedes Turbo malfunctions?

Turning the engine off and allowing to cool before attempting a re-start will reset the fault, however the chance of resetting will decrease with time making this into a permanent malfunction. Mercedes main dealerships will often seek to purchase a whole new turbo from the manufacturer as a solution to these issues.

When did the Mercedes Benz W210 turbo diesel come out?

For stopping power, the E Class (W210) 300 Turbo Diesel braking system includes Vented Discs at the front and Discs at the rear. The E Class (W210) model is a car manufactured by Mercedes Benz, sold new from year 1997 until 1999, and available after that as a used car.

What kind of engine does a 1985 Mercedes 300SD have?

I have a 1985 Mercedes 300SD Turbo Diesel with about 140,000 miles on it. Recently it’s become increasingly difficult to start, until eventually it wouldn’t start at all. It still turns over fine – I can hear the starter turning the engine (at least until I wear the battery down by trying to start it).

Are there any problems with the Mercedes BlueTec diesel?

The BlueTEC diesel is unlike any gas or diesel engine ever made. Even as Mercedes-Benz admits to diesel fraud in Federal Court, the problems keep coming. Mercedes-Benz admits it has been lying about the BlueTEC problems for over 10 years. Let that sink in.

Why does my Mercedes 300SD Turbo not start?

The filter connects to a very short rubber tube that connects to the air intake on the turbo. When I was having trouble starting the car, I tried spraying some starter fluid into that tube. The result was that the car actually had more trouble starting directly after I sprayed starter fluid. And it seemed the more I used, the worse it started.

Why does my diesel engine have blue smoke?

Blue engine smoke is the rarest type of smoke emanating from a diesel engine. The presence of blue smoke is an indication of burning oil. Blue smoke should not be ignored but is common when starting an engine in a cold weather. The oil thins out when it is cold and some could escape into the cylinder and be burnt.

What kind of smoke comes from a diesel engine?

Blue Smoke: Blue engine smoke is the rarest type of smoke emanating from a diesel engine. The presence of blue smoke is an indication of burning oil. Blue smoke should not be ignored but is common when starting an engine in a cold weather.

When to shut down a diesel engine with smoke?

No matter the color of the smoke it is not something you should ignore. A properly working and maintained diesel engine should produce no visible smoke. Make sure to shut down the engine immediately if you encounter excessive smoke as further heat or load could severely damage the engine further.

What do you need to know about a diesel smog test?

The diesel smog test will focus on a visual inspection of your vehicle’s emissions/smog components, a system check of the On Board Diagnostics ( OBD II) system, and a smoke check for visible smoke from the PCV system or smoke plume observed 3 to 15 feet from the tailpipe (s) that lingers for more than 3 seconds.

What causes ESP light to illuminate on Mercedes E-class?

This is a common problem with the E-Class. In some cases, the gear shifter can cause the ESP light to illuminate if liquid gets spilled on the shifter. Mercedes C-Class W203 W204 ESP light -ESP light on a C-Class is typically caused by a defective brake light switch or low battery voltage.

What does EPC stand for in CDI engine?

We have a G400 Cdi, which has an intermittent problem whereby the engine will die suddenly with the message EPC (electronic power control: visit workshop…). This is a dangerous situation as when it happens there is no warning and there is complete loss of power, including steering etc.

How to repair a Mercedes W211 E 270 CDI?

Use the practical and easy car repair tutorials from AUTODOC Subscribe and save today! Yes, I would like to receive email newsletters with special promotions. I can unsubscribe at any time. Please note our Privacy Policy. Please, wait…

Why does my Mercedes engine refuse to start?

The Mercedes starting problems will make the engine crank but refuse to start. The crankshaft position sensor is the culprit here that does not send the TDC (Top Dead Center for the piston in the number one cylinder) signal to the engine. As a result, the engine does not fire despite cranking.

What are the symptoms of a Mercedes problem?

Symptoms of this problem include a check engine light, cylinder misfires, and failure of O2 sensors. The culprit is likely to be leakage of oil from the oil pressure switch. Changing it will solve these Mercedes problems.

Are there any problems with an older Mercedes?

Unknown battery drain, electrical shorts, blown fuses – these can be difficult to isolate! One of the most common problems we see on older Mercedes. Top problems for diesel owners. Kent recommends starting with the basics Yes, Kent has seen it first hand. Don’t neglect this! Could be any number of things causing the problem.

How can I fix a problem with my Mercedes?

If you have a problem with your older Mercedes and are trying to figure what is causing it or how to fix it, you have come to the right place. Let Kent explain how his solutions finder works: “Just select the location of the problem you are experiencing, the chassis designation of your car and a few key words and click Search.

What is the fault code for Mercedes C class?

Our experts and the autoaid diagnostic tools assist you in finding the cause of error and support you with all questions for repair with the best solution. fault code code xennon – We removed headlamp and now needs re coding – i have been advised Mercedes uses SCN coding.

What do I need to troubleshoot my Mercedes Benz?

Troubleshooting fuel related problems is not very difficult and you can check the fuel pressure yourself. Checking the fuel pressure is very simple. For this test, you will need a fuel pressure gauge. What you need is a fuel pressure gauge with Schrader valve adapter.

Is there a warranty on a Mercedes fuel pump?

Mercedes like it even today, still selling fuel pump assembly for big $ instead of just the fuel sending unit by itself, FYI part No. A163 470 01 94 Some of them replaced under warranty, but very few compare to number of 163 MLs manufactured. Mine is just not showing full on fillup, usually 3/4 or 7/8 max., in 3 years, I got used to it.

Is there a diagnostic scanner for Mercedes Benz?

Mercedes-Benz Star Diagnostic DAS This is diagnostic scanner used at Mercedes-Benz dealerships. Yes, it can do anything including programming of sensors and features. Any of the scanners listed above can read and clear the Check Engine / Service Engine Fault Codes.

What does it mean when your turn signal is not working on Mercedes?

In newer Mercedes models, you will get a warning on instrument cluster stating “Turn Signal Left / Right / Front / Rear / Side Malfunction”. Depending on the Mercedes model and problem a warning may or may not show on the dashboard.

Are there any problems with the Mercedes Benz transmission?

But a chain can be as long as its weakest link and that philosophy applies to Mercedes-Benz transmission. While the transmission in itself is bulletproof the 13-pin connector and the valve body issues have caused a fair reputation damage to Mercedes-Benz.

Is Mercedes Benz safe?

The Mercedes-Benz G-Class is a very resilient product. Despite having been in production since 1979, it remains one of the hottest offerings of the three-pointed star marque. The early models of the G-Class may be far from the luxurious cars of Mercedes today, but it is considered to be one of the safest passenger vehicles in the world.

What does CDI mean in Mercedes Benz cars?

CDI (Common Rail Diesel Injection) is a series of diesel engines from German Daimler AG , which are installed on Mercedes-Benz vehicles. CDI motors were developed in 1997 and are successfully used today.

What is a Mercedes – Benz engine?

The Mercedes-Benz OM642 engine is a 3.0 litres (2,987 cc), 24-valve, aluminium/aluminium block and heads diesel 72° V6 engine manufactured by the Mercedes-Benz division of Daimler AG as a replacement for the Mercedes straight-5 and straight-6 cylinder engines. The engine features common rail Direct injection and a variable nozzle turbocharger.

Why does my Mercedes CDI have no acceleration?

You may also have a plumbing leak with the turbocharged air (compressor side) or turbine side.. Either way you probably need to pay a visit to the stealer (or a certified mechanic) for the diagnostics..

Why does my Mercedes Benz hesitate when taking a turn?

4) sometimes when i’m decelerating to take a turn (down to about 30km/h) and then accelerate again after that turn, upon resuming that acceleration the problem gets really bad.. its very sluggish and it seems like i lose the function of a cylinder and am now running on 3 instead of 4. but here’s the kicker..

Why does my Mercedes engine cut out while driving?

I agree it is electrical, not likely fuel pump. mercedes c180 w202 cutting out while driving….. also when restarting the engine is struggling to hold her self and is cutting out again ,but have noticed this more today as when driving home it cut out 3 times in a row then started and i got home ok , but some days no problems at all ????

What makes a car stop in the middle of the road?

Alternator troubles make car turns off while driving. Source: The Sun. An error alternator is one of the most expected reasons make your car stop in the middle of the road. So if there is a problem with the car alternator, it loses the ability to charge the electrical system, which actually causes the power drain.

How long does it take to shift a Mercedes Benz?

These simple do it yourself instructions take less than 5 minutes. No tools are required to perform this procedure and make your Mercedes-Benz shift like new. Try this if your car has been shifting sluggish recently. This will make your car fun to drive again, it’s like getting a free tune-up.

Why did my C220 engine cut out while driving?

Whilst driving, around 30MPH the car seemed to almost shut down as all the warning lights came on, pressing down on the accelerator seem to prevent it from shutting down and the car was fine. New Fuel Filter – Checking through the log book, I noticed the Fuel Filter hadn’t been changed for 4 years and reading up online seemed to point to that.

Why is my Mercedes Benz gear shift stuck?

Gear shift stuck is one of the most common problems with Mercedes-Benz cars. Unfortunately, looking to see if the brake lights turns on while you press the brake pad, is not a good test to tell if the brake light switch is working properly.

What are the symptoms of Mercedes 7G Tronic gearbox failure?

Common Failure symptoms: 1 Intermittently not changing gear 2 Gearbox goes into limp mode 3 Sticking in gear 4 Not selecting gears

Is there a problem with the Mercedes possition sensor?

Mercedes-Benz throttle body or throttle position sensor found on C-Class, E-Class, S-Class, CLK-Class, SLK-Class may fail causing idle issues, no idle or poor acceleration. Symptoms of defective Mercedes throttle body or throttle position sensor include: A common problem that you may notice is that the car drives fine under normal acceleration.

Are there any problems with the Mercedes BlueEFFICIENCY engine?

Mercedes seem to have big issues with the injectors on the OM651 Engine Mercedes C Class and E Class BlueEfficiency models (OM651) seem to be afflicted with an injector problem which Mercedes are struggling to resolve. Update:There has been a lot of interest in this article, and we’ve asked Mercedes a number of questions about the injector issue.

Why does my DPF sensor stop working on my Mercedes?

As with any other sensor, this one can fail out of various reasons. In some cases, incorrect readings can give a misleading representation on DPF state. In most cases, the sensor will stop operating. This will give a ‘check engine’ light and a corresponding code. This usually triggers limp home mode, so you can expect a noticeable loss of power.

Why does my Mercedes E270 lose so much power?

Most loss of power issues on diesels is due to fuel starvation caused by a dirty filter. You say it heavy on fuel, diesel knock all the time and low power at low RPMs. You may have an injector problem. Is the car smoking under normal acceleration?

Why is my Mercedes Benz CDI not working?

A friend of mine told his CDI had a problem with the pressure sensor at the high pressure rail, if you take the wire off from the sensor, the system would not regulate the pressure down but would work at max injection pressure. This again resulting to a single injection as it would otherwise inject too much diesel when running idle.

Are there any problems with the Mercedes B 200?

Switching from run-flats will help but could be quite costly. It would be best to get smaller wheels with higher-profile tyres, and definitely not anything with an aggressive 45-series profile. It’s disappointing when problems occur so soon after delivery, but they sometimes do.

Is the Mercedes-Benz C 200 a good car?

In terms of reliability and common faults there is little difference between Mazda, Honda and Toyota. They are all good, reputable brands building cars of a good quality with few reliability issues. Choose the one that best suits your family needs. Mercedes-Benz C200 2001: What could be causing it to have coolant problems?

How much oil does a Mercedes Benz C200 take?

Consider a Mitsubishi 380 or a Toyota Camry of around 2000-2003. Mercedes-Benz C200 1995: How much oil does it take? The oil fill with the filter is 5.5 litres, or 5.0 litres without. Mercedes-Benz C200 2007: Best fuel type?

Are there any problems with the Mercedes c250?

Granted, that was the only case reported of a fire, but given the other engine problems, it makes one a little leery of the 2012 C250. Other problems plaguing the 2012 C250 include peeling paint and rattling noises. Is the Mercedes-Benz C250 actually worth it?

Why does the interior of a Mercedes Benz deteriorate?

While Mercedes-Benz is well known for manufacturing their vehicles with high quality components, the one thing they cannot control is the rate at which the interior or exterior components deteriorate. A variety of factors, including where your vehicle is parked and how long the interior is exposed to the sun, may cause the wood trim to fade.

What should I do if my Mercedes FOB is not working?

If you need a replacement battery note that Mercedes-Benz uses CR2025 battery type. Ensure you have new batteries in your key fob. Next, look carefully at your Mercedes-Benz key. When you press the button on your key you should see a small RED led light.

Where is the Def heater on a Bluetec Mercedes?

It is located underneath your Mercedes, next to the DPF. It is relatively easy to replace. Follow this guide to learn how to change Mercedes DPF Pressure Sensor. DEF heater is another known weak points. All Bluetec vehicles use Diesel exhaust fluid, also known as AdBlue. It is stored in an external tank, and it would freeze in cold weather.

Can a 2002 Mercedes Benz drive cycle be incomplete?

Also, one customer with a 2002 Mercedes was unable to complete the secondary air injection monitor until one evening he allowed his vehicle to idle for 5-20 minutes in his driveway. He then turned off his vehicle and restarted the vehicle the next morning and allowed it to idle for another 5-10 minutes.

Navigation