R-Class (W251) Produced 2006-2013: R320CDI, R350, R420CDI, R500

question about A/C

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Jan 7, 2011 | 04:02 AM
  #1  
bigwen's Avatar
Thread Starter
Newbie
 
Joined: Sep 2010
Posts: 4
Likes: 0
93 honda
Exclamation question about A/C

Hello, everyone, My car is 08 r350. on the A/C panel, there is a button for "A/C REST"
I read the manual, the chart has two different informations regarding this A/C REST, One is for A/C COOLING ON/OFF, One is for RESIDUAL HEAT VENTILATION.
I got confused. What is this A/C REST for and should i leave it ON or OFF when i turn on the A/C?
Thank you very much for the answer.
Reply
Old Jan 7, 2011 | 08:18 AM
  #2  
avlis's Avatar
MBWorld Fanatic!
 
Joined: Jan 2002
Posts: 1,265
Likes: 1
From: Nashua, NH
2008 VW GTI
The button has two functions:

Engine running: the button toggles the AC on/off
Engine off: the button runs the water pump and fan to continue heating the car
Reply
Old Jan 18, 2011 | 04:06 PM
  #3  
gforaker's Avatar
Member
10 Year Member
Liked
 
Joined: Jan 2011
Posts: 203
Likes: 21
From: Doylestown, OH
2015 Audi S4, 1982 Fiat Spyder, 2010 R350, 2013 E550 Cabriolet
This is actually a very good feature to have in Germany, not so much in the US. Germans are very attuned to saving energy as much as possible. It is considered the proper thing to do to shut off ones engine while waiting in line at a train crossing, long traffic light, or whatever line. You are considered a very anti-social person if you sit in an idling car. Even if it is quite cold outside, you just don't let a car idle for long. This feature allows you to shut off the engine for a while without freezing.

Many new European cars even have a feature which shuts off the engine for you if you sit for a few seconds and restarts it automatically when you step on the gas pedal.
Reply
Old Jan 18, 2011 | 04:11 PM
  #4  
aggst1's Avatar
Super Member
 
Joined: Dec 2005
Posts: 574
Likes: 2
From: Pennsylvania, USA
2011 GL450, '06 R500 traded, '08 ML350 sold
Yes indeed the Europeans are more energy conscious. The fact that gasoline costs four times as much as in the US however necessitates such actions. I spend about $70 to fill my car. I'd take the bus to work too if I had to spend $280.
Reply
Old Jan 18, 2011 | 07:38 PM
  #5  
mercdriver's Avatar
Member
 
Joined: May 2007
Posts: 98
Likes: 0
From: Vancouver, BC
AMG C36, 2010 R350 BlueTEC 4-Matic
Its a GREAT feature to have here. I use it all the time, as does everyone else I know that has it...
Reply
Old Jan 20, 2011 | 04:03 PM
  #6  
vuhuynh36's Avatar
Newbie
 
Joined: Jan 2011
Posts: 1
Likes: 0
r350
how to replace cabin air filter on 2006 r350
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 01:58 AM.

story-0
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-1
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.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-2
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-3
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-4
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-5
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-6
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-7
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-8
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE
story-9
Mercedes Teases Updated EQS With Steer-By-Wire and a Yoke

Slideshow: The 2027 update adds a fully digital steering system, revised styling, and potential charging upgrades as the company looks to revive interest in the luxury EV.

By Verdad Gallardo | 2026-04-04 10:24:38


VIEW MORE