Question about 2003 Mercedes-Benz S-Class

2 Answers

S320 Air Conditioning

S320 2003 model - air conditioning does not switch on and always displays a red light in the AC button. If the refrigerant gas used for the air conditioning was low or requiring to be replaced could this cause such a problem or is it something more serious?

Posted by on

  • Taz09 Sep 12, 2008

    Thanks for the solutions. A refill of Freon from the dealers solved the problem and the air conditioning is working fine. The red light is no longer on and the AC button now responds to switching the air con on/off.

×

2 Answers

I also had the same problem. a/c system on mercedez s class is very sensitive,  you must discharge the old freon and use new freon as specify on the manual, and precise pressure : 14 bars. you may find the specification under the hood. if the pressure go under 13 bars, the compressor will automatically shut off, and the red light on the EC button will be on.   

Posted on Aug 06, 2008

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.

  • Master
  • 883 Answers

Could be numerous problems, but you are correct in assuming low freon...try that after visual check under hood confirms no obvious failures like missing drive belt or disconnected electric wires...

Posted on Jun 05, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

My air conditioning button stay lite all the time and the air doesnt work when the car is at and idle


if it stops working at idle or stop lights, the problem most likely is that the condenser is not getting cooling air from the ac fan in front of it
this results in a high head pressure and so the high pressure switch stops the ac compressor
take it to an accredited ac specialist shop for a proper diagnosis

Jul 18, 2016 | 2003 Pontiac Sunfire

2 Answers

Can a 2002 ac compressor go on to a 2003 kia sedona?


As long as they have the same part number there should be no issue. Sometimes the same part is used for four or five years consecutively. Check the part number and appearance.

Jun 10, 2015 | 2003 Kia Sedona

2 Answers

Hi have an 04 hyundai tiburon i dont know where to locate where to put freon for my aid condtioner


STEPS TO CHARGING YOUR CARS COOLING SYSTEM:

STEP 1) Look under the hood of you car on the left side of your cars engine. There should be two stainless steel lines coming from a stainless steel cylinder to your cars compressor. The two lines have plastic dust caps on them sometimes they are blue or black. Usally the black has the larger diameter tubing that runs between the evaporator and the compressor. This will be the port that you hook the refrigerant hose up to.

STEP 2) Start your cars engine after you have secured the hose hook up to the air conditioner line port. Once the cars engine is running, turn your cars AC on to Max cool. Shake the can of coolant well. The gauge on the can of coolant should read in the blue but if it is in the green your air conditioners pressure will be between 0-25 pounds per square inch. This means you will have to add refrigerant to the compressor.

If your cars air conditioner pressure is in the blue. The system has the proper amount of refrigerant and you do not need to add. If the gauge reads in the yellow you may want to seek professional help because refrigerant is not what is wrong with the unit and is probably something more technical and most likely something that you do not want to attempt to do on your own. The red on the gauge means do not add any refrigerant at all and to seek professional help.

STEP 3) If the pressure of your air conditioning system is in the green it means it is safe to add the refrigerant. You should wait for your air conditioning compressor to switch on before squeezing the trigger to add the coolant. When the compressor switches off then release the trigger and repeat until your pressure gauge on the coolant can says that the coolant is in the proper range. If the needle on the gauge is in the top part of the blue you have successfully charged your cars air conditioning unit.

STEP 4) Release the attachment from the tubing port and replace the dust cap back in it's proper place and you are done. The cars air should be cool and your compressor should cut off and on less often. If problems persist you should consult a mechanic or someone that has experience with air conditioning systems.

Jun 26, 2011 | 2003 Hyundai Tiburon

1 Answer

The air conditioning only blows hot air, and you can hear the air leak every second, or so.


The Air-conditioning needs to be re-gassed. Take the car to an Auto Mechanic to get the Air-Conditioning re-gassed. They might also need to check it for leaks to make sure the gas stays in.

Jun 29, 2009 | 1999 Dodge Caravan

3 Answers

A/c light blinks


The only problem with your air conditioning light blinking in the 4runner is a bad relay. Toyota has updated the relay to part #90987-02028. Call your local Toyota dealership for this relay. You can buy it at the parts counter. It is about $65. It takes 1 minute to replace. This is the first thing you should do to troubleshoot the AC blinking light. I had the exact same problem with my 2003 4runner and this relay resolved my issue. This same procedure is for the Camry and other Toyota models with the same blinking AC light, but the relay part number might differ.

Apr 04, 2009 | 2004 Toyota 4Runner

1 Answer

Air conditioning not working, the ac light is blinking while is o


Thank you for your concern. Some how the conditioning is working again without doing anything.

Mar 30, 2009 | 2003 Toyota 4Runner

1 Answer

Difference between an Air Filter and Air Conditioning filter


The air conditioning filter that your manual speaks of is known as a ''cabin filter'', it is much differant then your engine air filter. It filters the incoming air into your vehicles interior. So if someone has told you to replace your ''air filter'' they are more then likely speaking of your ''engine'' air fitler. You should check your engine air filter every oil change. If it shows signs of dirt, then replace it. Hope this helps =)

Mar 12, 2009 | 2003 Toyota Land Cruiser

3 Answers

2003 model Toyota Prado Landcruiser air conditioning light flashing


i think it is a wiring problem mine does the same i keep pressing the bottom on and off then after a while it came on and stayed on then a few months later i pluged a satnav in the power point then it messed up the air conditioning again i have had a lot of wiring problems with mine

Sep 09, 2008 | 2004 Toyota Land Cruiser

1 Answer

Air Conditioning on BMW 3 Series 2003


change the cabin filter will get rid of the smell however for cold ac you will need to recharge the ac and have a black light test in 5 days or less after it was recharged. then they would spot for a leak in the ac system

Sep 02, 2008 | 2003 BMW 325

1 Answer

2000 Altima GXE: Air Conditioning does not shut off


air will always come out of vents but unless u have your a/c button pressed in and light on your a/c pump will remain disengaged and not use any more gas try tuneup and check tire press. to regain fuel economy

May 24, 2008 | 2000 Nissan Altima

Not finding what you are looking for?
2003 Mercedes-Benz S-Class Logo

900 people viewed this question

Ask a Question

Usually answered in minutes!

Top Mercedes-Benz Experts

Colin Stickland
Colin Stickland

Level 3 Expert

21949 Answers

yadayada
yadayada

Level 3 Expert

60792 Answers

Michael Contreras
Michael Contreras

Level 2 Expert

164 Answers

Are you a Mercedes-Benz Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...