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GL450

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Question
Vehicle will sometimes turn over, but not start
Based on your description, it sounds like your fuel pump may be randomly shutting off. This can be due to a malfunctioning powertrain control module as the repair shop told you. This can also be related to a faulty fuel...
Question
Squeaking noise in brake pedal
If your brakes are squeaking, this can be caused by a number of different things. The brake rotors could have a surface finish that no longer promotes quiet braking. The brake rotors should have a criss-cross looking surface finish to...
Question
Vehicle will sometimes turn over, but not start
Based on your description, it sounds like your 2007 Mercedes GL450's fuel pump may be randomly shutting off. This can be due to a malfunctioning powertrain control module as the repair shop told you. This can also be related to...
Question
Door lock & unlock on their own
I would recommend taking the battery out of your key fob to see if that makes a difference. It is possible that there could be a short within your key fob that is causing the locks to jump. This is...
Question
Steering wheel off-center, counter-clockwise
It is very possible that something may not have been tightened down enough during the alignment that you had done and that something slipped out of place. Alignments are very sensitive and are measured down to the hundredths of a...
Question
SUV lost power and unresponsive
For your Mercedes GL450, it is very likely that an issue that produces symptoms such as this would be associated with a Check Engine Light. With this being considered, I would recommend having the Check Engine Light codes read with...
Question
A new battery will not hold charge overnight. alternator is not the problem / 2 mechanics checked.
Hello. If the battery continues to drain overnight despite recent replacement, then there might be some sort of electrical short or malfunction somewhere on the vehicle that is draining the battery. A good battery should hold a charge overnight without...
Question
My Mercedes Benz Gl450 will tilt to the right quite a lot and the air matic won't work and the front right wheel almost touches the fe
This is likely a compressor issue. The compressor may be faulty or may have a bad connection. This can be tested several ways. You may have a code available from the computer which explains more about the compressor issue. You...
Question
What is the function of the auxiliary battery? How is it related to the intelligence servo module?
Hello - these two components are unrelated. The principle function of the secondary battery is as a backup for the primary battery - for the Sensotronic Brake System, which uses electronic pumps for brake pressure to each wheel - not...
Question
how often do i change my oil
My service manual says to change oil and filter every 13,000 miles or 12 months. You should verify this in the owners manual and with a local dealer just to verify.
Question
Im planning on buying this car
Hello, thank you for writing in. It is difficult to say what the average maintenance costs would be. Reasons mostly including geographical differences and a lack of knowledge of previous repairs. The cost of parts and labor will vary greatly...
Question
Car won't turn over
The battery should be load tested by a professional. Load testing can only be reliably performed on a fully charged battery. If the battery passes a load test be sure it is NOT a marginal pass in which case you...
Question
Car won't start. Can't determine if either ISM is bad or hydraulic valve body need to be replaced.
I presume your saying that your car does not crank when you turn the key, because that is the only fault I would expect to be associated with transmission parts controllers.The ISM (intellegent servo module) is responsible for the transmission...
Question
My engine fan is not kicking in, but my temp is between 80 -100. Is my thermostat bad because my check engine light just turned on
This can be caused by a number of things such a faulty thermostat, or a failing coolant fan switch. As you may know the coolant fan switch helps to maintain the proper coolant temperature by turning on and off at...
Question
Hi my Mercedes Benz gl450 2007 airmatic leans a bit more on the driver side left front and a bit front the rear.
Hi there. Check the plumbing to the air shocks system on the driver side and see if there is a leak. You may have to spray the lines down with water and soap to see the leaks as the mixture...
Question
Abs and esp light on
The ABS (anti-lock braking) and ESP (electronic stability program) lights usually come on at the same time because the two systems share components. WHen the lights are on, it means that the controller has seen a malfunction and stored a...

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