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CLS550

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Question
washer fluid hasn't been coming out nozzles to windshield, yet within 12 hrs "refill washer fluid" notification comes up - leak?
Before replacing the reservoir, you should check the hoses to see if there are any leaks. It could be something as simple as a hose coming loose or breaking. If you are certain it's the reservoir, then I would go...
Question
Automatic Trunk open/close feature not working but button lights up. I soldiered broken wires back together - reset?
Hello, thanks for writing in. Most of the time this is caused by a programming issue with the control module. It usually occurs if the module fails or if there is a loss of power. It can also occur if...
Question
Center console cup holders (rings have fallen off - think cup holder assembly needs replaced
I would suggest replacing it. We, however, do not do this type of service. I do apologize. I do just as you are doing and go through the dealership to get the correct part for your car. Not everyone is...
Question
My Mercedes 2009 CLS 550 will crank but wont start
First, try using an alternate key. If it starts easily with a different key, then the original key needs to be reprogrammed. If the problem persists with either key, then it could be the ignition switch or possible a fuel...
Question
Does my water pump need to be replaced?
Hi there, thanks for writing in. There are 3 really good ways to check if your water pump needs to be replaced. First, visually inspect around the water pump looking for any signs of a leak. Water pump leaks,...
Question
Gas smell around car
As a safety precaution do not park the vehicle in the garage until the problem is fixed. The gas tank is made out of plastic and you may have a leaking tank or fuel line. The easiest thing to check...
Question
Water Pump
If your water pump is going bad this can have many effects on your heat and air conditioning system. If the water pump is leaking this will cause the coolant level to go low. When this happens the heating system...
Question
After shifting into drive, car lunged forward
It could just be that the transmission control electronics are faulty or that the Transmission Control Module (TCM) just needs an update. There is a Technical Service Bulletins (TSBs) regarding shift quality concerns for your vehicle. It's number LI27.00-P-051451 and...
Question
Brakes will not decelerate and steering wheel seized
This issue that would need to be inspected firsthand. In the case of such a catastrophic event, I would guess some Diagnostic Trouble Codes (DTCs) would be stored. Retrieving these codes is the first step in the diagnostic process. It...
Question
Between 35-40 mph a harmonic vibration in car cabin
Since it sounds like you have ruled out tires and tire balance, it's time to start looking at other things. The problem could be the driveshaft or possibly a faulty wheel bearing. However, the fact that it goes away after...
Question
While highway driving, car stopped accelerating & became inoperative
This message indicates there is a problem in the anti-lock braking and/or electronic stability program system. If the problem is severe enough, the vehicle will go into limp mode, as you experienced. The root cause could be anything from a...

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