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I took the GL in to my local MB dealership for an oil change and to have the oil cooler sealer and oil filter housing gasket replaced.
Last year I had a coolant flush by my local MB dealership. Infact I had a double flush because I found chucks of antifreeze build up in the expansion tank.
While the GL was in the MB dealership I advised my SA that the heater was not blowing heat. I also advised I had a small antifreeze leak.
My SA called me and stated I have a minor crack in my antifreeze expansion tank. He told me I wouldn't have to replace it right away and back in my day, we would always patch those cracks up with some JB Weld. Does anyone else have any better solutions on repairing the minor crack other than JB weld that may work better? This is just a couple month fix as I will replace the expansion tank myself.
My SA also stated my heater circulation pump was bad and that's why I'm not getting any heat. However the backseat passengers heater works fine.. the MB dealership wants almost $830 to replace it.
Its been in the single digits to -2 here in St. Louis and I'm starting to get cold with no heat.
I inquireinquired with 2 different indy Mercedes Mechanics. Both stated something completely different (see attached screenshots).
My final question is, can anyone shed ANY light on where the circulation pump is located and do I have to remove the front bumper to access it?
ALL COMMENTS WELCOME AND THANK YOU ALL FOR YOUR ADVICE.
I'm not sure about the location of the pump on a diesel (it's right next to the reservoir on the gas engine), but the reservoir was a $35 part on Amazon and 10 minutes of work to replace. I don't think I'd bother hoping JB Weld fixes it.
So I couldn't just not have heat. I decided to investigate myself. I observed absolutely zero sign of the antifreeze expansion tank leaking. Not even a drop.
I'm following all the coolant line in hopes to locate this auxiliary pump and I found it. It is literally 8 inches away from the expansion tank. I knew what it looked like due to looking at photos of it online. To verify, I used my cam phone to snap photos of the pump.
Note part number. Expansion tank to circulation pump.
I see zero reason for this to cost $800+ to repair.
Oddly, I topped off the antifreeze and started the GL. NOW the heat mysterious works.
I cold started and the coolant level stayed full with no leaks anywhere.. however I continue to get the "Top off Coolant" message.
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In reference to the front left strut. I purchased a new air shock assembly from Arnott 2 years ago. Less then 3 months ago I kept getting the airmatic light with a picture of the SUV and an arrow pointing up. Dealer stated the actuator was bad. Arnott gave me the option to replace just the actuator or the hole air shock. I chose the air shock. 3 months later the light came on again, but only 1 time. Dealer states again that it's the actuator.
The coolant level sensor is in the reservoir. The sensor is probably bad if it reads low when the reservoir is full. FCP Euro has it for $55 if you want something better than Amazon. I'd probably go that route if I were doing it again. The cap on my recently installed Amazon reservoir leaks very slightly. I've never replaced the pump, but based on another recent thread, it sounded like an item that is prone to failure.
Ok. Your fault light may be because the Arnott strut you put on isn’t actually ADS - it just mimics the signals the system needs to see in order to function fault free. So if you have two different struts on the front (OEM ADS and Arnott Faux ADS) I can see how that can trigger a fault.
so you should have a warranty case with Arnott I would think.
the good news is that Arnott now makes a real functioning ADS strut.
Are you certain the ADS is functional in the new struts? Not long ago, Arnott Doug said they were not functional. On their website, it says "custom valved" as the dampening type for ADS.
As stated above, all my air struts I purchased new from Arnott. The ADS from what I see work. It lowers into sport mode, lowers and then raises slightly in comfort. Not exactly sure on how else to test it. Again the airmatic light popped one once after I replaced the new left strut with a warranties new strut. The light has never come on since.
I will replace the recirculation pump soon.. I tend to only want to use Genuine Mercedes parts. If I have to purchase new struts again, I will order the Bilstein from FCP Euro.
The leak I on my garage floor I narrowed down to be power steering fluid. It leaks like crazy. Below is a picture I took yesterday. It's green.
Power Steering Fluid
The dealer suggested I replace the whole resvior. I've read it's a 20 cent gasket. FCP EURO has both for cheap. Any advice and/or suggestions are very welcome.
I appreciate you all for the wealth of knowledge you all have contributed. I can wrench with the best of them. You all have saved me tons of money!
Sadly all front interior vent tabs are shot too. I know I'm not the only one haha.
Lastly, my driver side monitor behind driver seat doesn't turn on. Truth be told, after owning the GL, I've never used them anyway.
The raising and lowering is a function of the airbag. ADS would adjust the internal valving and the Arnott you have just simulates ADS so it doesn't trip an error but yours may be defective.
Changing the failed seal is a real pain. Not sure what the manual says but I'd bet you need to remove the fan and possibly the upper radiator hose. I did mine when I changed the radiator since there was plenty of room to work and everything was out of the way.
The raising and lowering is a function of the airbag. ADS would adjust the internal valving and the Arnott you have just simulates ADS so it doesn't trip an error but yours may be defective.
Changing the failed seal is a real pain. Not sure what the manual says but I'd bet you need to remove the fan and possibly the upper radiator hose. I did mine when I changed the radiator since there was plenty of room to work and everything was out of the way.
^ This is correct information. Arnott still produces "ADS" struts that are NOT actually ADS - they bypass the ADS system and trick the system in to not realizing it... Bilstein is the real deal. The ADS system activity changes the dampening of the shock, not the height - that is controlled by the airbags. Bonus: Arnott are made in China!
Do Arnott rebuilds retain ADS? I have some on the front, and the damping definitely changes in the different modes. It is very noticeable. I wish MB had something between normal and sport. Normal is a little floaty and sport is too harsh on bumpy roads.
02-19-2021, 02:08 PM
