W140 ac recharge. Automatic Air Conditioner Diagn...
W140 ac recharge. Automatic Air Conditioner Diagnostics Description and Operation The automatic air conditioner (A/C) in the W140 models can be diagnosed by performing the following steps. All any comand of the control unit working correctly, only Improve the cooling of your car's air conditioner with an easy-to-use AC recharge kit. R134 you key in the amount to W140 airconditioning recharge Can anyone tell me where the A/C lo pressure port is in a W140 S280? Thanks all, Greg. Charging the system with a refrigerant charging kit can take between 5 and 10 minutes, depending on the system’s capacity. How to recharge the Air Conditioner (A/C) system of your ML-Class W163. Want cold air in your car this summer? I show you a quick and cheap way to get cold air if you have a slow leak in your AC syste Car A/C Not Working or Blowing as Cold? Recharge your Car's A/C System in LESS than 5 Minutes for CHEAP following these Few Easy Steps. Article «Diagnostics of the electronic system of automatic air conditioning (A/C)» from the section «Power unit/Ignition system» car repair manuals «Mercedes-Benz W140» (W140) 1991-1998 years of release. Here are a couple of highly rated kits available on Amazon. In this video I show you how to reset the Mercedes-Benz air conditioning system in order to work again. 17K subscribers Subscribe Getting ready to evac and recharge AC. Learn how to recharge your car's AC in 8 easy steps. If the system works just continously use it until the ac stops working or you can start to hear a hissing sound from inside the dashboard caused by low gas level. Or should i take it to the dealer or an independent shop to get this done? I filled This video shows how to recharge the air conditioner on your Mercedes-Benz. If anyone can ahow me the ports with pictues and infomation on how to do it muself would be great. Wasn't blowing super cold before, but cold enough. I go though all of the steps on how to safely charge your air conditioning system with refrigerant. This DIY Mercedes A/C Recharge Guide provides step-by-step instructions for safely recharging your air conditioning system at home. How to Recharge Your Car's Air Conditioner: Introduction: Is the air coming from the vents in your car just not as cold as it used to be? You've likely run low on refrigerant in your A/C system. Some systems won't allow an initial charge without How to recharge AC in a car. Any suggestions would be greatly appreciated. This video will show a quick and affordable way to top off your A/C system and get it blowing cold air again. comHey guys, in this video we will show you how we recharged telletubby Senior Member Joined Mar 23, 2005 Messages 276 Reaction score 0 Age 81 Location between Caen and Cherbourg, Normandy Your Mercedes 1998 W140 S320 blue Jul 2, 2013 Thread starter #3 I have been asked to look up the W140 climate control diagnostic codes and function tests included in my WIS. 990 engine? Would this happen to be the air condition compressor clutch? Is this part changeable w/out having to remove the air condition compressor & Hi, I have W140 '92 and have problem with my AC which i need help fixing the problem, Sometimes the AC blows warm air and sometimes blows cold air, its nice to have warm when the climate is cold, but in Bali Indonesia, tropical island, not good at all!!! I wonder what's wrong with my W140 AC Learn how to fix Mercedes AC with expert tips. The dealer quoted me a price of 900 dollars (might as well be 9000). Looking to recharge freon myself. **In most cases blower motor replacement can be avoided! This 3 Would anyone happen to know what can cause a "click" noise about every minute coming from the air condition compressor on a W140 chassis / M104. I can not stress safety enough when working with re After spending many hours banging my head against a wall, reading what seemed like endless forum's about climate control problems and getting half a dozen different answers to what seemed like the same problem I have decided its a good idea to help the next guy out. After i start the engine, clima compressor dont start . As I understand it The main issues to look out for are the engine wiring harness in the earlier 1992-94 models and the AC evaporator which is a $$$ fix. You can use an R134a recharge kit to recharge your system if the air conditioning (A/C) compressor is not working. My W140 Coupe After four (4) years of having a leak, I decided that it was time to fix it properly, replace the major parts of the AC system including the evaporator, expansion valve, dryer, compressor and condensor. How much does ac recharge cost on a Mercedes-Benz S320 W140? Labor cost for ac recharge on a 1994-1998 Mercedes-Benz S320 W140 ranges from $45 to $120, with a typical cost around $77. Boost cooling performance & save money with expert tips! Is your vehicle's Air Conditioning weak or not working? Learn how to recharge it in this simple and easy-to-follow video. 07 – 1999 air conditioning system with R134a at home without going to the workshop: a step-by-step guide for the do-it-yourself MERCEDES W211 HOW TO RECHARGE THE AIR CONDITIONER AC E320 Our Website: http://mechaniclifestyle. However I hear that compressior kicks on and I can smell dump air which is slightly colder that normal vent air but still warm. I have not included the 'nominal' sensor values here, but a faulty sensor should be readily identified. $50 to get this done by high school friend I've known 45 years. The display windows (arrows) show in sequence the actual temperature sensor readings, refrigerant pressure, blower Hi to All!!! Today my A/C evaporator core give up !:crybaby2::mad::crybaby2: All try it to recharge but no luck, replaced O-ring on a Expansion Valve-no luck!:mad: I hear a hissing inside the box when we put a compressed air or use a vacuum. I just checked to make sure the compressor was engaging. A/C just started blowing hot yesterday. Before we begin, remember: These instructions may vary depending on the AC recharge kit that you are using. The problem is when i put ignition ON in 2-3 seconds start both fans (radiator engine) on HI speed. When I set the temperature to the lowest setting and put it in auto mode the fans stay at max, like its trying to cool the cabin off but just can't get there because the air temperature isn't low enough. Apr 27, 2011 · Where are the low and high presssure ports? My ac isnt leaking its been 3-4 yearsand i wanna fill up the ac now. Lynall sent me a diagram showing the low pressure port- but I still can't identify it in my car (a 1998 S280). 85 300d. com/shopforum/forumdisplay. Pay ats or quick fit to do it about £50-60 Or go to a Mercades dealer? Any idea how much? What's my best option? Sent from my iPhone using Tapatalk This video shows how to recharge the air conditioner on your Mercedes-Benz. I have seen in halfords bottle of r134 gas with gauge for recharge for arround £50 which has to be How to get into the W140 AC Diagnostic menu Article «Checking the air conditioning system» from the section «User manual/Maintenance» car repair manuals «Mercedes-Benz W140» (W140) 1991-1998 years of release. php?f=1) - - W140 Ac Air Conditioning Codes and Recharge Info - Clearing Codes 1 reading Jump to Latest 189K views 35 replies 20 participants last post by MrFerocious Nov 30, 2020 Hi everyone, I need to recharge my A/C- Today's heat made me more aware of the need than usualy. Troubleshoot common issues and restore cool comfort to your vehicle with practical solutions. Fault codes are Low Refrigerant (and sun sensor). You can recharge the system yourself with a charging kit and some refrigerant, as long as your car uses r134a I have a 1993 300se that I love and I am looking to add another w140. com/shopforum/index. How to troubleshoot the Mercedes Benz Air Conditioner System, Read Sensor Data, Reset the Unit If you have this A/C unit, follow these steps to troubleshoot your Mercedes Benz Air Conditioner System. If you check the loaded output at pin 25 connector 2 with 4ohm or so resistor (30 to 50watt)the line to the AC disconnected. Applicable to ML320 ML350 ML430 ML500 ML55 AMG 1998-2005 Before we begin, remember that these instructions may vary depending on the AC recharge kit you are using. I also decided to check the S500 This time around, I noticed and rented a real nice master cool R134a 2-way manifold gauge set from AutoZone for FREE On my friend's W140 I could not locate the second AC recharge port,could only find one,right above the front bumper,behind the grille,where is the Hey everyone -- my AC is blowing cool but not cold. Have owned it for about 13k miles A/C has never been serviced. Thanks peeps. 5 lbs. Check these troubleshooting and repair guides for more help on your Mercedes-Benz. Can anyone describe the location of the low pressure port in the W140? Greg. Jun 30, 2025 · Mercedes AC Service: Worth the Investment While DIY recharge kits offer a budget-friendly option for minor refrigerant issues, professional service provides comprehensive system evaluation that DIY approaches can’t match. Anytime you have a flashing light or a solid EC or ac Is your air conditioner A/C not working or blowing hot air? The Air Conditioner system can get very complicated in cars, but that doesn’t mean that you can’t perform some troubleshooting yourself. I read the DIY and below is what I found out. There are two (2) basic tests; the first reads the actual sensor values; the second, readout of the DTCs. This article will overview the A/C system, common problems, and repairs you can perform independently. Is your car's air conditioning blowing air but not cold enough? In this video, I’ll show you step-by-step how to recharge your vehicle’s AC and get it blowing ice cold again. PeachParts Mercedes-Benz Forum (http://www. Oct 9, 2025 · With the right tools and knowledge, you can perform a Mercedes A/C recharge yourself and get your vehicle’s climate control back to peak performance. I am hoping to get a low mileage newer 1996-99 w140. So the A/C serviceman said that I need a new Does your vehicle need an AC recharge? Learn how to recharge your car’s AC system with this comprehensive guide from YourMechanic. that machine costs $4500 it removes all R134, oil, and tells you how much it removed, stores it inside machine, then draws down to vacuum, boils off moisture, then recharged with precisely 2. Car sat for 9 years, so probably no major leak--will pull vacuum and test. Hi ! I have w140 s 600 coupe from '93 and i have a problem with ac control unit. Test This video can show you the basics of recharging an AC system. I think the real question is now is why does the diagnostic say 7 bars pressure and the 134a can says 110? Hey guys I replaced the compressor in the 300SD and we've evacuated the system and started to recharge but the compressor still refuses to engage. Even my particular model of a car (The 300SE 1991) came with a few different AC compressors. I also go through all of the valu The automatic air conditioner (A/C) in the W140 models can be diagnosed by performing the following steps. You can get an AC recharge in four simple steps. As I said, a few headaches (including for retailers of air-conditioning units and fridges which now have to use this gas, albeit with seals designed for this gas - unlike cars a few years older or more - due to DSEAR and other H&S accumulation regs) Pass the aspirin A friend of mine whose AC works fine on his 93 had some chaffed wires rubbing on the sub frame next to the compressor, and that may be your problem too. The air temp out of the vents doesn't Hi first hot day and it looks the air con is not working! So I have three options Do it my self and get the kit from halfords About £40-60. This video will apply to any Ford F-150, the only difference will be the location of low pressure a/c charging port In this video I am going to show you how to find, and replace a faulty blower motor regulator. Example Shown on Dodg Recharge your AC system properly. We hope you find the Charge Mercedes-Benz A/C with Refrigerant guide helpful. How to recharge A/C (air conditioner) system on your Mercedes-Benz. When an AC system loses its ability to cool properly, you may need to recharge it. Be sure always to read the instruction notes on your recharging kit. Mercedes in this example. Recharging car air conditioners is a straightfor. Pressure ZERO, as expected. peachparts. if you are feeling cheap, use a small extension cord to the HI, Summer in TX is approaching so I did some AC work for a friend on an 97 Acura which has a small leak but usually needs a can of R134a. But in the process of looking for the right part number, I noticed that the w140 series of cars came with a myriad of different AC compressors. If your car's air conditioner isn't blowing cool air, then you've likely lost some of the refrigerant, usually due to a leak. . So the two following I need to recharge my AC to blow colder air and also delete the metallic hissing sound that comes on by the fan area only when the fan runs(hot or cold same effect on sound). Maybe even charge the A/C system if needed. moviestudioland 9. I would think disintegrating wiring harness would be easy to spot. I turned the air conditioning on and observed the compressor clutch had engaged and was turning. Before I go to Walmart, I just wanted to make sure this is what I am Learn how to recharge AC in car (R134a) safely and efficiently with our complete step-by-step guide. Obviously the compressor won't run as it is empty. php) - Tech Help (http://www. In this video, I'll show you how to access AC diagnostic mode in late 90s and early 2000s Mercedes climate control systems. I'm In this video I show you how to properly recharge an empty automotive R134a A/C system after servicing it. It only takes about five minutes an How to recharge the Mercedes-Benz S-class (W140) <– VIN 1A 128 373 1991. Just to verify, I had someone push the EC switch and observed the clutch disengaged. I suggest to re-fill the ac, add UV dye and then clear the fault codes and see if the system works (ac compressor engages) If not then start troubleshooting on the electrical side. Learn how to recharge your car, truck, or SUV’s air conditioning system to help you stay cool while driving. I cannot see this info in the current maintenance sticky thread here. Hi all When I turn air con on there is warm air blown. And they ALL LOOK THE SAME!! How to recharge YOUR car air conditioning yourself with freon kit. I would urge you perform safe practices when working with AC and avoid venting refrigerant int On my friend's W140 I could not locate the second AC recharge port,could only find one,right above the front bumper,behind the grille,where is the second one located? Car refrigerant & oil filling quantities | Refrigerant and oil filling quantities for common vehicles Refilling refrigerant Tips for automotive workshops Step-by-step guide on recharging air conditioner ac on Ford F150 pickup truck. mxviij, iectnn, pjoe, ab5zgb, rwsv, 5bad, fdsuy1, illtz, g3x2yq, 6fy73y,