1999 SL500 70,000 miles.
I had the check engine light come on then go off, then on. The code said the mass airflow sensor was the problem. They wanted $390.00 for the part and 1 hr. labor to replace.
The local European parts store told me to try to clean it. $6.00 for the cleaner and about 30 minutes to do the job.
No more check engine light and the performance difference is astounding.
It's always worth cleaning the MAF before replacing. I cleaned mine when the car was misfiring and the ASR light was coming on and it completely cured all of the faults.
I just used 96ΒΊ alcohol to clean the very fine filament by squirting the alcohol from a plastic bottle with a very fine hole directly on to the fine filament.
wayneg is correct. My hangout is on the W210 forum and there are a lot of owners there who have gotten good results from cleaning theirs. As you'll notice from the DIY, there is a specific cleaner for them. Other things might work, but I'd advise the one recommended in our Sticky.
Mercedes Benz - Das beste oder nichts!
If you decide to go the replacement route, which I did because I had a hard failure code, AutohausAZ has them for $265 and free shipping for genuine German-made in the yellow box. I'm told that you need to avoid the ones made in South Africa that come in a gray box.
Falls Church VA
1966 200 Fintail
The AutoGuide.com network consists of the largest network of enthusiast-owned enthusiast-operated automotive communities.
AutoGuide.com provides the latest car reviews, auto show coverage, new car prices, and automotive news. The AutoGuide network operates more than 100 automotive forums where our users consult peers for shopping information and advice, and share opinions as a community.