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Old 02-03-2012, 12:00 PM
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Join Date: Jul 2004
Location: Barrington, RI
Posts: 5,464
How To Repair Exterior Temperature Gauge Connection?

92 300D. Exterior temperature gauge is intermittent. Will be on or off for random amounts of time without my doing anything. However, if it's off and I want it to come on, all I have to do is smack the dash area beneath the instrument cluster and it will come back on. So it seems pretty clear there's a loose or dirty connection.

How do I access it and troubleshoot?

06 E320 CDI "Benson", Platinum Blue, 175k mi
06 E320 CDI "Rutherford", Black, 145k mi
91 300D "Otis", Smoke Silver, 129k mi
98 E300 "Murray", Silver, 128k mi, Stage 2 Rocketchip chip tuned, under son's care, getting EXPENSIVE!

Twelve other MB's owned and sold
2002 Honda Odyssey 254k mi (want to name it "Homer," wife won't let me)
1961 Very Tolerant Wife
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Old 02-03-2012, 12:02 PM
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Join Date: Jul 2001
Posts: 897
Lets' Pull the Instrument Cluster!

Chris W.
'95 E300D, 360K
Objects in closer are mirror than they appear.
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Old 02-03-2012, 01:23 PM
Biodiesel300TD's Avatar
Join Date: Dec 2004
Location: Albany, OR
Posts: 4,845
Sounds like a bad ground to me. After you pull the cluster make sure the bundle of ground wires behind the cluster are contacting well and the connection is tight.
'04 Jetta TDI Wagon
'82 300TD ~ Winnie ~ Sold
'77 300D ~ Sold
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