hiss

It’s taken me some time to narrow down, but this highly unlikely scenario has recently started on my 1997 SL320 with standard non-Bose hi-fi system. By setting the Climate control unit to diagnostic mode I can see the temperature of the refrigerant at the aircon evaporator varying between...

Hello, I seem to have developed a strange hiss when the turbo is working and gets a bit more pronounced when the throttle is at 100%. So far I have checked: Air filter - OK and seated correctly. General look around the turbo - Looks fine, no obvious holes. There is no lack in performance...

My power steering hisses and judders when i turn it on full lock to the right. Theres no noise at all when turned to the left. Any ideas what might be wrong???? Cheers, Stu.