SL/R230: AC Compressor-Gauge Readings
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Junior Member
Joined: Apr 2024
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2007 SL550
AC Compressor-Gauge Readings
2006 500SL, air conditioner blowing hot air even after trying to put in Freon. The AC gauge LOW is registering above the HIGH, both well below 50. The compressor and clutch are both spinning. We cleared all codes with a Foxwell NT710. Is this a sign the compressor is gone? Would love to confirm before buying a new one. Thanks for the help.
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Joined: Aug 2020
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From: Gretna, NE
'03 SL55 Black, '03 SL500's Aegean, Mars Red, Tazanite, Alabaster, '11 S550 Flint Gray
There is no A/C clutch, it is a variable displacement compressor. Check commanded compressor % in A/C module.
Thread Starter
Junior Member
Joined: Apr 2024
Posts: 48
Likes: 0
2007 SL550
Got it. We weren’t sure if the system was a bit low. Just bought the car to fix it up and sell it. But when we put the gauge on it, we saw the High was reading lower than the Low even after trying to add a little Freon. Adding the Freon didn’t solve the problem. I was told this was a sign the compressor was bad.
