Discussion Starter · #1 ·
My GLE 400 has suddenly increased idle speed from 550 rap 850 when using the AC. I've owned side Nov 1, 2015. Dealer can't find any trouble indicators, no engine light, etc. consequently the shop has done nothing to lower the rpm. When started with the AC on the idle first sets at 550 then rises to 850. Naturally this means increased stopping effort in traffic, a constant fight on breaking, and increased surge when shifting into either reverse or drive. If I turn off the AC the idle speed is always 550. I've owned another Mercedes and plenty of other cars. Never experienced this before. Again, this a a recent occurrence. Any comments?