W210 MAF replacement when??

G-a-r-y

Senior Member
Joined
Feb 7, 2006
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Location
Bristol
Your Mercedes
S211 320 CDi, SLK 200 R171.
A Friend has a BMW 530d, he's just replaced the MAF unit as a matter of course. I think on these engines they don't seem to last for more than 50k miles.

My E320CDi is nearing 95k, it's on the original MAF. When should they be replaced. As I understand it's only a little tiny wire inside that gets hot, so I suppose it must deteriorate over time?
 

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