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Marty, Mercedes Technician
Category: Mercedes
Satisfied Customers: 53941
Experience:  Bosch Certified Master Tech. Over 35 years experience.
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Cl500: problem with ac

Customer Question

problem with ac
Submitted: 2 years ago.
Category: Mercedes
Expert:  Marty replied 2 years ago.
Hi, can you describe the problem you are having with the a/c?
Customer: replied 2 years ago.
I can not turn the ac on. on -off switch is not responding , blower blows when I set the temperature but do not look like a compressor is running, I have plenty of Freon so I do not think is a low pressure switch. prior to this time everything worked fine. so I think is something electrical maybe as simple as a relay. can you point me in a right direction
Expert:  Marty replied 2 years ago.
There is no relay for the compressor. Let's first try reading and erasing the fault codes in the system. I've made a video of the procedure. Copy and paste the link below into your browser. Make sure you write down the fault codes before you erase them.
Let me know what you find.
Customer: replied 2 years ago.
ok. I did reset . code number 1269 after that on-off switch for ac start working but seems like a compressor still do not run
Expert:  Marty replied 2 years ago.
You need to get some pressure gauges connected to the compressor to see if it's pumping. It sounds like you have a bad compressor or low refrigerant.

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