When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
2014 E550. So what is this reservoir, and what goes in it? Driving myself nuts trying to figure it out, and no obvious info in owners manual or online search. Is it a coolant reservoir for the turbo intercooler? What is it, and what goes in it?
2014 E350 also restored: 1969 Camaro convertible SS 1957 Chevy Belair 2dr hardtop
On my sons car he has a similar Reservoir on his transmission overflow line. It seems that at high speeds his manual trans gets real hot and instead of the fluid spilling out it goes into a Reservoir and then when it cools off it goes back into the trans.
What did this end up being? I don't have it on my 2013 CLS550 4matic
Originally Posted by ScottWeir
2014 E550. So what is this reservoir, and what goes in it? Driving myself nuts trying to figure it out, and no obvious info in owners manual or online search. Is it a coolant reservoir for the turbo intercooler? What is it, and what goes in it?
Correct, Mercedes refers to it as the "low temperature circuit" ... entirely separate from the main coolant system that circulates through the engine block and radiator. There's a small heat exchanger but no pump or separate fan for the low temperature circuit.
Correct, Mercedes refers to it as the "low temperature circuit" ... entirely separate from the main coolant system that circulates through the engine block and radiator. There's a small heat exchanger but no pump or separate fan for the low temperature circuit.
2014 E550. So what is this reservoir, and what goes in it? Driving myself nuts trying to figure it out, and no obvious info in owners manual or online search. Is it a coolant reservoir for the turbo intercooler?
I run wet wetter in mine, keeps AIT's low! What is it, and what goes in it?
I drained my little tank and added Water Wetter, and I can't tell the difference
Next stop is draining it all and replacing with maybe 80-90% water and the rest Propylene Glycol, just for pump lube and rad protection. Or maybe Water Wetter, who knows.
I was thinking the bennie might be more about better flow than heat Xfer, but all that matters is if it helps or not.
Also considering water misters in front of the rad, which I think would be awesome. I already have the stuff to do it, except one very important thing; motivation...
The pump for this system has a short life span, but varies. Hard to say but maybe 3yrs to >5? That's based on people who have replaced them, and post about it, but my guess is many/most are unaware it has died. The car will not tell you, so might want to check. It's hard to tell since it only comes on when air gets really hot, but you can jumper it to force it on, or "see" it if you data log. To data log you floor it and the the air temp should drop, then rise slowly and not go very high. How high? I guess maybe 20F but it varies on ambient temp and how long you floor it for. If it climbs to like 130 or more then I'd assume the pump died. You can data log using a cheap app like Torque Pro ($5?) and a cheapie $10 OBD Dongle. Good for checking/troubleshooting other stuff too, totally worth $15.
There are other tools that records the goings on of the engine a lot better, but more $ of course. I have an awesome setup (brag) :p
Anyhooo, if anyone has questions on the pump, jumpering or whatever, feel free to ask. And yes it's very important for peak power, if you care about that, and you should because you have a twin turbo V8...
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
E550 Mystery Reservoir
