Mercedes-Benz Problems

Are you having problems with your Mercedes-Benz? Let our team of motoring experts keep you up to date with all of the latest Mercedes-Benz issues & faults. We have gathered all of the most frequently asked questions and problems relating to the Mercedes-Benz in one spot to help you decide if it's a smart buy.

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Used Mercedes-Benz SLK review: 2004-2007
By Graham Smith · 15 Jul 2010
The Mercedes-Benz SLK was born at a time the world was waking up to a new age of sports cars. That was the late-1990's when sports cars were back in favour after years in the motoring wilderness.In a matter of a year or two buyers were out shopping for sporty drop-tops. They wanted to inject some fun into their daily motoring, and look good at the same time. Overnight it was cool to be seen in an open car.Carmakers responded with a raft of new models, among them Mercedes-Benz, which released its new age SLK two-seater sports car.  While it was built along the same lines as the old classic sports cars, the SLK delivered a level of comfort and convenience traditional sports cars couldn't.New-age sports cars like the SLK were more practical than their traditional predecessors; they could be used for daily transport without sacrificing the things we'd come to take for granted in the modern car.MODEL WATCHThe SLK arrived in 1997 and with it came one of the great innovations in sports car design, the folding metal roof.  It wasn't really new, the idea had been developed many years earlier, but those early attempts weren't very successful.Mercedes-Benz showed with the SLK that the folding metal roof could not only work, it could work reliably.  In the process it transformed sports car design. In the one car you could then have the comfort, refinement and security of a coupe as well as the fun and feeling of freedom of an open car. The SLK truly was a car for all seasons.On top of that the SLK's folding metal roof was simple to raise or lower. The driver no longer had to fumble with a clumsy frame while trying to erect it in a howling gale, and then attempt to drape a canvas top over it while being drenched in a sudden downpour.The SLK's roof could be raised or lowered in a matter of a few seconds simply by pressing a button.  The only downside to it was that once folded and out of sight in the boot it cut into the space available for luggage. It was necessary to travel light when you left home in an SLK.The new SLK that arrived in 2004 expanded on the original SLK theme, further refining it and making it even better.  While the basics remained the same - it was a two-seater with a folding metal roof - the details were quite different.For starters it was longer and wider, the extra space being used to enlarge the interior and make it more comfortable.  There were also reshaped seats, a new dash with a central computer screen, new switches, and new plastics for the dash and console that were more durable for top-down motoring.On top of the new dimensions was a new, more aggressive look with a droop snoot reminiscent of the McLaren-Mercedes Grand Prix cars of the time.  The snoot was central in a new grille and flanked by new headlamps.The engine choices ranged from a supercharged four to a V6, and on to a stonking 5.5-litre V8 if you had the wherewithal to afford an AMG-  tweaked SLK 55.The AMG model aside, the regular SLK delivered 120 kW and 240 Nm when powered by the 1.8-litre blown four, 170 kW and 300 Nm with the 3.0-  litre V6, or 200 kW and 350 Nm with the 3.5-litre V6.  The standard transmission was a seven-speed auto, but there was also a six-speed manual available. IN THE SHOPGenerally robust and reliable the SLK gives little mechanical trouble.  The folding metal roof is a complex piece of gear, make sure it works and seals properly as repairs and adjustment could be expensive. Check for oil leaks around the engine and transmission.  It can be worthwhile finding an independent specialist for servicing if you want to save a little money on maintenance.ON THE ROADThe original SLK was considered to be dull by many people, but the   new 2004 model couldn't be described in such a way.  With its stiffer body and larger footprint it was a great driving car, whether you preferred cruising or wanted a more spirited drive.The V6 engine in particular was smooth and refined, with wonderfully smooth power delivery over a broad rev range.  Unfortunately the same couldn't be said for the six-speed manual gearbox, for despite Mercedes' best efforts it was still an awkward, slow shifting unit.The auto transmission was a much better choice, and most buyers would have gone that route, given that the auto was the standard fit.IN A CRASHWith a taut, responsive chassis boasting anti-skid brakes, electronic stability control, and traction control, overlaid with a comprehensive array of airbags the SLK was well equipped to handle a crunch.AT THE PUMPThe fuel consumption of sports cars tends to vary quite markedly depending on the way they are driven, but despite this the SLK is   relatively economical.  On test the SLK 350 typically returned around 13 L/100 km, and would do better than that if driven with a soft pedal.LOOK FORMore aggressive looksSuper smooth V6 engines Sportier handlingRoomier cabinMore comfortableCoupe refinement,Roadster funTHE BOTTOM LINEOut with the dull, in with the fun, the updated SLK was a joy to drive.RATING 85/100
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Guide to long wheelbase cars
By Stuart Innes · 05 Jul 2010
No, it doesn't mean a luxury version for the models they are based on are more than luxurious already. The L means long, or more correctly long-wheelbase.
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Mercedes-Benz recall 150,000 Cars
By Paul Gover · 12 Oct 2010
The world's oldest carmaker is back-pedaling over a steering problem that could cause some current-model C-Class and E-Class cars to lose the power assistance for their steering.The first hint of trouble is a whining noise, then heavy steering during parking.More than 150,000 cars are being recalled worldwide for a repair that should take around 30 minutes."We take safety seriously," the spokesman for Mercedes-Benz Australia, David McCarthy, said. "There is no reason for people to be concerned. We're on top of it."Some of the recall cars in Australia have not been sold and will be fixed before they are delivered, while owners will be advised as soon as possible.The problem is caused by a fault which can allow the power steering fluid to leak. "It does not affect the ability of the vehicle to be steered. The steering just gets heavier," McCarthy said."We've had no reports of problems in Australia."The last time Mercedes-Benz had a safety recall in Australia was in 2009, for a rear-end water leak which could affect the automatic tailgate on its M-Class SUVs.
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Toyota power pressure
Answered by Carsguide.com.au · 20 Apr 2010

Pressure cleaning modern engines with all the electronics they have is fraught with danger and I would guess that’s the reason the Mercedes dealer won’t do it. The Toyota dealer might have a different view, but most mechanics these days won’t do it because of the risk of water getting into connections etc. and causing problems.

Ask Smithy Xtra Mercedes heating up
Answered by Graham Smith · 26 Oct 2010

’Benz specialist Peter Lennox suggests that you first check to make sure the thermo fan is working correctly, so check the fuse and relay there. He says leaves can accumulate in the fan shroud and between the radiator and air-conditioning condenser, which can reduce the airflow, so it’s worth removing the radiator and any leaves that you find.

Disengaging Mercedes-Benz ML300
Answered by Graham Smith · 25 May 2010

You would expect the revs to increase when you downshift to a lower gear whether the cruise is on or not. It’s normal for the cruise to stay on unless you hit the brakes or turn it off using the switch. You can overtake by using the wand on the steering column to increase your speed and then use it again to decrease it once you’ve overtaken and it will then resume the previously set speed. You could also just use the accelerator to increase your speed and then lift off once you’ve overtaken the other vehicle and it will again come back to the set speed.

Intermittent transmission
Answered by Graham Smith · 29 Apr 2010

Approach them head on! Take it back to your dealer and insist the problem be sorted out. If they feel they can't solve the issue request they get a Mercedes technician in to check the car. There's no other way to do it, other than directly.

Aircon comparison between cars
Answered by Carsguide.com.au · 12 Oct 2010

Generally it was always felt that the air-conditioning of European cars wasn’t up to the task for Australia; that was because there wasn’t the demand for powerful A/C in Europe where the climate is generally milder. But when the European carmakers began to move on to the world market and export their cars to places like America where the demand for good A/C is very high they have improved the performance of the A/C systems in their cars. The cars you say have had good air are cars that are typically built for the US market, those you say don’t have good performance are not. A/C systems soak up quite a bit of engine power in driving the compressor and that has a greater impact on smaller engines than big ones, and again the cars you are critical of have smaller engines, so they will also probably run smaller compressors.

Mercedes-Benz C200 1998: Buying tips
Answered by Graham Smith · 29 Apr 2010

The W202 C-Class is generally a very good car and well worth considering as a used car buy if you appreciate driving a nice car. In my view used Mercedes-Benzs make good buying, but you have to understand that they too break down like any other car, and they can be more expensive to repair. The main thing is to find a Mercedes- Benz specialist to work on the car, that way it won't cost you an arm and a leg for servicing or repairs. Same as it is when buying any used car, low kays are always better than big miles and a service history is essential. A later model Japanese car may well be cheaper to run, but it won't be nearly as enjoyable to drive.

Squeaky brake pad on Mercedes C240
Answered by Graham Smith · 15 Apr 2010

Try beveling them again and see if that makes a difference. That usually fixes the problem, but if it doesn't work consult a brake specialist and perhaps try another brand of pad.

Disclaimer: You acknowledge and agree that all answers are provided as a general guide only and should not be relied upon as bespoke advice. Carsguide is not liable for the accuracy of any information provided in the answers.
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