How do you reset the AC Compressor after installing a new one and adding Freon?

Tiny
MERCS600
  • MEMBER
  • 2007 MERCEDES BENZ S600
  • 5.5L
  • V12
  • TURBO
  • RWD
  • AUTOMATIC
  • 110,000 MILES
Cannot get the car's computer to acknowledge and read the new air conditioner compressor that has been installed.
Saturday, May 21st, 2016 AT 1:40 PM

1 Reply

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,513 POSTS
Hey MERCS600,

A scan tool is needed to access the HVAC and clear the codes. This video will show you how

https://youtu.be/InIlnsjOVFA

Do you have pressure in the system? The compressor will not come on without having at least 70 psi of static pressure inside the system.

Here is a guide on how to do it

https://www.2carpros.com/articles/re-charge-an-air-conditioner-system

Let me know what you find

Best, Ken
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Tuesday, May 24th, 2016 AT 4:51 PM

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