Hello,

Okay, I did the change last night, I tested the car today, after doing to + 16 to P2, the EC light turned off.

The ac ran well on the way to work. but on the way back, about 10 minutes into the trip, the ec light suddenly came on and the air became warm again....

I will try to diagnostic test again and post the values...

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2006 BMW M5 "Heidi" @ 109,000 miles
2005 MBZ C55 AMG "Lorelai" @ 165,000 miles
1991 MBZ 300E "Benzachino II" @ 165,000 miles
1990 MBZ 500SL "Shoshanna" @ 118,000 miles

(On the hunt for a good used M103 engine as of 6/10/23, PM me if you have one to sell!)