£ C43 £ AMG £

Go into the AC fan menu

go to option 10 and turn up the fan speed on the AC rad.

use the right side temp buttons and press the temp increase button to go upto 99.

guysandiego

thanks for the info - can you tell me how to get into the AC fan menu>?

02S430

believe u hold down rest

mikey33

You put both sides on 72 degrees and hold the rest button for five seconds.

harjothundal

What if your vehicle doesn't have the rest function?

mikey33

It should have the AC off/Rest button.

£ C43 £ AMG £

I hold down the AC button to get into the menu.

Holding the rest button opens and closes all the windows if they were open to start off with.

06E55

Neither the off nor AC buttons work on my 06. I remember getting into the menu once but can't remember how I did it.

Peter_02AMG

I don't have REST button either..

cmn130

and what does this do??

cmn130

i switched mine to the 99. mine was at 0 before.. not sure if this will help, but worth a shot..


there seems to be alot of functions in that menu. Im curious to know what they all do

shooter

Doesn't seem to work on the E63. Still neat to know all these little tricks.

nanayaw6

I believe for 06 its the driver's side "Auto" button. Press and hold that for a few seconds (5??) and it brings up the menu.
I'm assuming that holds true for late model 05's 06's and 63's

harjothundal

If I remember correctly, the REST function was only present on 03/04 models...

Anyone care to share what exactly this will do? Just increase the speed of the radiator fan in the front?

cmn130

it worked on my 04 e55. I have the reso button. But still not sure what it does lol. there are alot of menus on there. as far as some research I have done its like a "secret" menu?

mercuxio

I did the increase in option 10, but it resets itself everytime the car is restarted. Anyway to make the settings stored/permanent?

taurran

I just did this, and yes I could hear the fan get noticeably louder. It was too loud at 99, so I put it back down to 66 and it was bearable.

Yes, it resets itself every time I restart so only so useful.

nanayaw6

HOw did you guys go about this cos I've had mine raised for months now and it's never reset. What was the procedure you both did?

taurran

1) Started the car
2) Set both front AC banks to 72
3) Held rest for 5 seconds
4) Selected option 10 on the left
5) Turned the right number up to 66-99

Is there another step to save your changes?

nanayaw6

I did mine in star under correction programming. I think the ac panel is only good for readout and temporary activation for diagnosis so I wouldn't expect anything you change in there to stick after a restart

taurran

That makes sense, but I don't really care enough about it to pay for star service.

mercuxio

I just discovered something interesting. If you do the above settings, and press and hold the "0"/off button for about a few seconds then exit the menu with the AC rest button prior to turning off the ignition, the settings will stay. If you turn off the ignition in the midst of being in the menu, the settings will reset.

And Option 20 seems to be the thermotronic LCD display brightness instead of whatever the have put in the forums. What I don't understand is that the settings can go from 0-99 then beyond that is a number with a small block like this -> "█00", "█01". It seems to be like a number 1 the █ is representing. But why wouldn't they just put a 1 instead of a █ ? When it hits "█01" the setting is super bright but the night auto dimming doesn't work.

tbal

Works in my 06... Pretty cool

Set temps to 72, hold down driver side "auto" 5 secs...

baldmike73

so what does this do exactly? no one seems to answer so many of the posters' questions
just curious to know

AWOL

In my 03, it basically runs the fans as soon as you put it on 10/99. The moment you turn it back to 10/00, the fans stop.

Its nice to do this while staging at the track so my temps dont go into the mid 90C's, they hold at 85C.