AC Lite switch blinks on and off
Thread Starter
Junior Member
Joined: Oct 2011
Posts: 45
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"2003" SL500 and E-320
AC Lite switch blinks on and off
I recently picked up my SL500 from MB Service after putting in an ABC Pump. Now I notice that the light on the AC switch is on and when pushed it turns off only to blink and come back on?? Anyone know what this is or what's causing this??
Thanks, Lou
Thanks, Lou
MBWorld Fanatic!
Joined: Jan 2007
Posts: 1,152
Likes: 29
From: Sydney, Australia
190D 2.5 (x2), 190E 2.6, W202 C240,W202 C43 (C55), W210 E55, W212 E250CDI
It's coming on because there is a fault in the A/C refrigerant circuit. There are 3 likely causes.
1) They have disconnected the A/C compressor signal wire or damaged it (highly likely as it's easy to leave disconnected)
2) They have disturbed some a/c lines and refrigerant has leaked out (unlikely)
3) They have left the pressure switch for the A/C disconnected (unlikely as not required to disturb unless they removed the oil resuviour for cleaning)
Send it back to the dealer to have rectified.
1) They have disconnected the A/C compressor signal wire or damaged it (highly likely as it's easy to leave disconnected)
2) They have disturbed some a/c lines and refrigerant has leaked out (unlikely)
3) They have left the pressure switch for the A/C disconnected (unlikely as not required to disturb unless they removed the oil resuviour for cleaning)
Send it back to the dealer to have rectified.
