2003 E320 AC
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2003 E320 Sedan
2003 E320 AC
So just got a another problem in the e320, for some reason the ac is blowing hot air even though its on the coldest setting possible. Another thing is the the (AC Off) switch stays lit red the whole time it wont turn off. Also there is perfect freon in it, cant even add more to it.
- Is there a way to reset the whole computer (everything in the car)?
- Possible only resetting AC?
Yea would greatly appreciate any help at the moment, sucks being in 80° weather with no AC......
- Is there a way to reset the whole computer (everything in the car)?
- Possible only resetting AC?
Yea would greatly appreciate any help at the moment, sucks being in 80° weather with no AC......
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Joined: Feb 2014
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2003 E320 Sedan
Called local Mercedes service shop they told me it would cost me a fortune to get it fixed. Later found out that the only way to get "AC Off" light to go away is to read and clear the fault code. But was also told many places don't have the right tool.
So is there any cheap generic tool to read and clear a fault code, don't wanna waste too much money. Or anyone around Houston,TX that can do this for a good price.
So is there any cheap generic tool to read and clear a fault code, don't wanna waste too much money. Or anyone around Houston,TX that can do this for a good price.
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2003 E320 Sedan
I ended up getting the problem fixed for free from a friend of mine, what had happened was that the compressor turned itself of cause of low freon pressure, so a fault code had to cleared for the HVAC system. Once that was done the compressor kicked back on and started to take freon again.
FYI: no special Star system was required, my friend used his Autel MD802 that has the ablilty to read and clear any fault codes for all electronic module. He recently got it from amazon for $350 rather than the retail of $780, very handy tool to have.
FYI: no special Star system was required, my friend used his Autel MD802 that has the ablilty to read and clear any fault codes for all electronic module. He recently got it from amazon for $350 rather than the retail of $780, very handy tool to have.
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2003 E320 Sedan
UPDATE: The light came back, called my friend again told me its most likely a small leak since it took awhile for the freon to leak out.
Are there any products that can small stops leaks?
Are there any products that can small stops leaks?
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2003 E320 Sedan
Went back today to the car mechanic, and told him that it screwed up again. He was nice enough to use some huge machine to recover,vacuum, and recharge freon with dye in it, but this time there was another problem the pressure on the high side was above 420+ it concerning both of us. He told me there is a blockage most likely the AC expansion valve s that is causing the pressure buildup.
Where is the AC expansion valve located, and could there be any other possible problems?
Where is the AC expansion valve located, and could there be any other possible problems?
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Thread Starter
Junior Member
Joined: Feb 2014
Posts: 49
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2003 E320 Sedan
Finally had time to mess around with the car and locate the expansion valve, but am having trouble getting the 2 nuts loose from the valve. I cant seem to find a tool thats gonna do the job, have tried every tool from homedepot/autozone.
