smartyin

as topic, a bluetooth obd2 can remove the ac off sign?

the ac off sign is on, and trying to use my bluetooth obd2 to remove the code.

i use the torque apps, but it show no code. and i try to remove the code, but not success.

any idea?

shardul

iTrader: (1)

You will have to diagnose it the DAS. A generic OBD code code will not be able to do it

smartyin

so any other way to remove this ac off sign? reset the ecu, or disconnect the battery?

it is so hot without air-con...

uraberg

Why do you think that removing a code would fix the problem? Turning off a tpms warning does not fill up the tires no?

I did find something that may be of help, although it is for a w210:

http://www.benzworld.org/forums/amg-...-clearing.html

smartyin

thanks for the information.

according below step, i am not sure which 1 is EC switches ?

PULLING FAULT CODES

Switch ignition on
Set left AC/heater temperature control to HI
Set right AC/heater temperature to LO
Depress REST and EC switches simultaneously within 20 seconds of turning ignition on
Hold REST and EC switches for more than 5 seconds
Air recirculation lamp flashes
Depress right AUTO switch repeatedly. Note trouble codes
FF is not a code

uraberg

As I said, this is for a w210.

But based on this, it stands to reason that there might be a similar procedure for a w211. You'll have to do some of this research yourself.

Yacht Master

1.There is no "AC off code".
2. If your E55 is 2003 or 2004 you would have an EC button.
3. If you have an EC button it is basically an on off switch for the compressor, red light on button = compressor off, no light = compressor on.
4. If the red light stays on after pushing the button the system is in protect mode.
5. Most of the time this requires an evacuation and recharge and the light will go out.
6. If your car is a 2003-2004 the diagnostics for the W210 work
7. If your car is a 2005-2006 that AC control has no diagnostics or ability to give sensor values like the 03-04's have.

Shifter

03.04 does have an AC off button if it is equipped with the ac unit with digital display

smartyin

my car is w211, with AC OFF button.

and i runing a KC system with weistec sc system. the ac system will shut down in 20 minute if i cold start and no drive on road.

i think because the coolant from enigne is too hot, and the ecu detect the temp is not going down, it think it is no refrigerant.

if i drive, and let the ac system being cool before it shut down. everthing is fine.

so i need a easy way to let me to turn off the ac off sign easily, so that i dont need to always to go to dealer or workshop to clear the code.