Thermostat relocation kit for 3.5L
Thread Starter
Junior Member
Joined: Jan 2021
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2014 ML 350 3.5L
Thermostat relocation kit for 3.5L
I have a 2014 ML350 3.5L. Is there a company that sells an aftermarket thermostat relocation kit? I can't seem to find one. In order to get to the thermostat you have to take out the entire intake manifold. Who was the idiot that came up with that stupid design? God damn! If there is none available then I will make one for myself and try to sell it to anyone who needs it. Let me know.
Last edited by d_787b; Jan 14, 2021 at 02:04 AM.
Senior Member
Joined: Jul 2017
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From: DFW, TX
Ml350 bluetec
How often do you think one needs to replace the thermostat? I am guessing, once every 100,0000 miles. If one was replacing it every 20,000-50,000 miles, I can see a need to for this.
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Joined: Sep 2018
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From: Los Angeles, CA
'22 GLE 350 | '15 ML250 | '87 560SL | '19 GLC 300 | '12 C250 (sold) | '02 ML500 | '98 C230
I have a 2014 ML350 3.5L. Is there a company that sells an aftermarket thermostat relocation kit? I can't seem to find one. In order to get to the thermostat you have to take out the entire intake manifold. Who was the idiot that came up with that stupid design? God damn! If there is none available then I will make one for myself and try to sell it to anyone who needs it. Let me know.
Thread Starter
Junior Member
Joined: Jan 2021
Posts: 25
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2014 ML 350 3.5L
Do you ever noticed how your temp gauge goes up to 3/4 of the way? I took my car to the dealership and they say that is normal. Usually the temp gauge is suppose to be slightly above the middle section in order to be at operating temperature. I have never seen a temp gauge that goes 3/4 of the way consistently unless there is an overheating problem. My coolant reservoir tank is still full yet I keep getting the warning light saying that I need to add more coolant. I know the interval for thermostat replacement is at 75,000 miles or whenever you replace the timing belt. But the fact that this car has this sort of problem and you have to take out the entire intake manifold just to get to the thermostat blows my mind. Does that answer your questions? And please don't give any smart *** remarks unless you have like an MS or Ph.D in mechanical engineering and be able to explain to me the science behind how these things actually work, because that does nothing except make you look like a troll.
Last edited by d_787b; Jan 18, 2021 at 02:55 AM.
Super Member
Joined: Sep 2018
Posts: 706
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From: Los Angeles, CA
'22 GLE 350 | '15 ML250 | '87 560SL | '19 GLC 300 | '12 C250 (sold) | '02 ML500 | '98 C230
Do you ever noticed how your temp gauge goes up to 3/4 of the way? I took my car to the dealership and they say that is normal. Usually the temp gauge is suppose to be slightly above the middle section in order to be at operating temperature. I have never seen a temp gauge that goes 3/4 of the way consistently unless there is an overheating problem. My coolant reservoir tank is still full yet I keep getting the warning light saying that I need to add more coolant. I know the interval for thermostat replacement is at 75,000 miles or whenever you replace the timing belt. But the fact that this car has this sort of problem and you have to take out the entire intake manifold just to get to the thermostat blows my mind. Does that answer your questions?
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From: The Great White North
W204 C63 Coupe, W166 ML350 BlueTEC, 928GT, Taycan GTS Sport Turismo, C5 Z06 & IS300 race cars
Do you ever noticed how your temp gauge goes up to 3/4 of the way? I took my car to the dealership and they say that is normal. Usually the temp gauge is suppose to be slightly above the middle section in order to be at operating temperature. I have never seen a temp gauge that goes 3/4 of the way consistently unless there is an overheating problem. My coolant reservoir tank is still full yet I keep getting the warning light saying that I need to add more coolant. I know the interval for thermostat replacement is at 75,000 miles or whenever you replace the timing belt. But the fact that this car has this sort of problem and you have to take out the entire intake manifold just to get to the thermostat blows my mind. Does that answer your questions? And please don't give any smart *** remarks unless you have like an MS or Ph.D in mechanical engineering and be able to explain to me the science behind how these things actually work, because that does nothing except make you look like a troll.
Furthermore, if you had checked the manual, you would have found the following under Coolant temperature:
"During severe operating conditions, e.g. stop-and-go traffic, the coolant temperature may rise close to approximately 248°F (120°C). The engine should not be operated with the coolant temperature over 248°F (120°C). Doing so may cause serious engine damage which is not covered by the Mercedes-Benz Limited Warranty."
So - just because Mercedes does not design their temperature scales (in any of their cars) so that 90-105C is at the midpoint, it doesn't mean that you need to replace, much less relocate the thermostat.
I do have an engineering degree, but unfortunately I don't have either the time or the crayons to explain to you how an electronic thermostat works and why your question is in fact stupid.
You're welcome.
