E-Class (W212) 2010 - 2016: E 350, E 550

The "Rest" button

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Old 05-06-2016, 07:23 AM
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2017 S550
The "Rest" button

Funny thing...I've had my E550 for 5 months now and just now realized what this button does....I honestly sware I dont even remember seeing it until yesterday thinking someone installed it over night while I was sleeping...lol...once I checked out just what it did from my manual I was pretty surprised. It's a nice little option....I'm just wondering

....do many who have it use it?
Old 05-06-2016, 07:33 AM
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2014 E350 also restored: 1969 Camaro convertible SS 1957 Chevy Belair 2dr hardtop
I believe that you press the button when the engine is off and it is cold out and you want to sit in the car and stay warm. It transfer the heat from the engine into the cabin for about 1/2 hour to keep you warm while you sit in the car.
Old 05-06-2016, 08:46 AM
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Originally Posted by dbldpr
I believe that you press the button when the engine is off and it is cold out and you want to sit in the car and stay warm. It transfer the heat from the engine into the cabin for about 1/2 hour to keep you warm while you sit in the car.
I read that...but will it do the same thing in the summer with the AC?
Old 05-06-2016, 08:49 AM
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2014 E350 also restored: 1969 Camaro convertible SS 1957 Chevy Belair 2dr hardtop
I do not think so since it uses the heat from the engine. Heat and air conditioning do not go well together. You do not want the heat from the engine going into a car during the summer when you have the air on.
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Old 05-06-2016, 11:17 AM
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W212 E550 4M P2
I don't believe it's available in the USA... guess that's why your Mercs are so darn expensive up there.
Old 05-06-2016, 11:49 AM
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No such button in US cars.
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Old 05-06-2016, 11:55 AM
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Originally Posted by GuestFromTampa
No such button in US cars.

You'd think an option like this would be available in all the cars as a standard option.
Old 05-06-2016, 12:45 PM
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Mine has it too

Mine has it too and I also did not notice it
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Old 05-06-2016, 12:54 PM
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2014 E550-sold 😩
US cars used to have the rest function. My C32 AMG had it and quite frankly it was worthless in terms of maintaining cabin warmth for any reasonable length of time. I used it a couple times and then forgot about it.
Old 05-06-2016, 01:34 PM
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Originally Posted by KEY08
US cars used to have the rest function. My C32 AMG had it and quite frankly it was worthless in terms of maintaining cabin warmth for any reasonable length of time. I used it a couple times and then forgot about it.
Oh...so it's not Canadian thing then....like I said...I just noticed it so I haven't had a chance to play with it. I'm just curious as to why some cars have it and some dont.
Old 05-06-2016, 03:15 PM
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2011 E550 P2 4M Sedan
More like not a US thing for the E. I think it may still be available on the S but not sure. In older stinky AC threads folks would recommend using rest to dry out the evap coils.

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