W208 CLK320 fan

[CLK320W208]

Hi folks

Any advice or guidance for a fan switch with a mind of its own! Car has auto a/c with Eco mode (which switches off a/c function). Intermittent blower speed / operation... HELP!!

 

[BlackC55]

So the blower is intermittent?

If so I expect the brushes in the motor have worn out. Either new motor or new brushes.

 

[CLK320W208]

Yes intermittent. Sometimes does the opposite of what you adjust!! Very odd