GL Class (X164) 2007-2012: GL320CDI, GL420CDI, GL450, GL550

AC not working, Hoping for an easy refill/fix

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Old 06-23-2014, 12:37 PM
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2007 W211 E350 4Matic / 2008 X164 GL320 CDI
AC not working, Hoping for an easy refill/fix

Figured I would start a thread at the start of my adventure.
Called MB, and they said that all they typically do is a evac and refill with dye. ($280)
If it is not making noise then it should work for at least a month, then bring it back to (hopefully) find the leak.
I asked if given the distance to MB, if I should take it to my local trusted AC guy to get the evac and refill with dye.
MB service advisor said;
"No problems, if it needs more then just a refill call back to set up an appointment, and make sure they put in dye."

Called my local AC shop, evac and refill with dye is $125!

Lets hope this adventure (and thread) is as short as can be, and not 5 compressor replacements like my Honda CRV!
Old 06-23-2014, 02:30 PM
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Originally Posted by N_Jay
Called MB, and they said that all they typically do is a evac and refill with dye. ($280)...Called my local AC shop, evac and refill with dye is $125!
If the compressor is working, then a refill is all that's necessary. A can of dye costs $15-20 at any autoparts. Get a $9 UV flashlight at any Walmart or any sporting goods. Since your system is low you won't overfill.
Old 06-23-2014, 02:40 PM
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Originally Posted by drgeeforce
If the compressor is working, then a refill is all that's necessary. A can of dye costs $15-20 at any autoparts. Get a $9 UV flashlight at any Walmart or any sporting goods. Since your system is low you won't overfill.
Letting my AC shop do the evac and refill.
Yes I know as long as the system has pressure you really don't need an evac, but I would first have to check to see if it had pressure.
Next, you can over fill the system, and an overfilled system can return liquid refrigerant to the compressor and today's compressors don't like injesting liquids.
I'll let him weigh exactly how much comes out, and then refill it with the speced amount, so we know how big a leak we are looking for.


If it is a big leaks are easy to find, little ones, not so much.
Old 06-23-2014, 04:41 PM
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No dye in the factory fill, so no trace of a leak.
A little lower pressure than he expected for the first complaint of no-AC, so it might not be a trivial leak, but we won't know for a few weeks.
$125 down, but a guarantee of free refills for the season, and a really well trained eye to find a leak should it not hold.
Old 06-26-2014, 01:31 PM
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Originally Posted by N_Jay
... a guarantee of free refills for the season...
Must be a relative working at the shop, or repair guy who really appreciates your business. I have never seen an offer of any free refills, even at fast food joints. LOL
Old 06-26-2014, 01:40 PM
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Originally Posted by drgeeforce
Must be a relative working at the shop, or repair guy who really appreciates your business. I have never seen an offer of any free refills, even at fast food joints. LOL
He is a local Radiator and AC shop.
Does excellent work.

Sorted out my Range River after another shop F-ed it up.


Replaced the compressor several times on my CRV, including fighting to get warranty coverage for a previously undisclosed factory/design problem.

Or, maybe it is just a mid-west thing.
Old 06-26-2014, 02:10 PM
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it is a midwest thing.

and pray that it is not the evap coil in the dash lol...
Old 06-26-2014, 02:14 PM
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Originally Posted by alx
it is a midwest thing.
Maybe so, but I had a Range Rover Indy shop in Southern Cal that was almost as nice to me.

Originally Posted by alx
and pray that it is not the evap coil in the dash lol...
If it is, it will get dropped at the dealer with the phone number for the warranty company.

Last edited by N_Jay; 06-26-2014 at 02:24 PM.

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