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Old 10-15-2007, 12:15 PM
Join Date: Oct 2007
Location: pittsburgh,pa
Posts: 3
560sl odometer not registering speedo works ok

driving this car and the speedo works fine however the odometer just quit registering,looked into the details and seen that there is a vehicle speed sensor located on the back of the speedo head, could this be the problem? i thought i would just replace the whole speedo head assembly use if i could find one. also the fuel gage only registers 1/2 tank when filling up also bounces to empty some times when driving. this is the first mercedes i've worked on so it's all pretty new to me, thanx for any help i can get, henry
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Old 10-15-2007, 12:25 PM
david s poole
Join Date: Mar 2005
Location: dallas
Posts: 1,822
the vdo speedo has plastic gears and the plastic reverts to a very soft state and the gears chew themselves up.try they can sell you the parts or fix it for you.
David S Poole
European Performance
Dallas, TX

"Fortune favors the prepared mind"
1987 Mercedes Benz 420SEL
1988 Mercedes Benz 300TE (With new evaporator)
2000 Mercedes Benz C280
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Old 10-15-2007, 12:30 PM
Registered User
Join Date: Sep 2006
Location: New Orleans LA
Posts: 93

IF you or someone else reset the trip od while moving you probably broke the plastic gears you can get a set for about 75.00 do a search on 126 speedo repair i can't find the link for the place that sell the gear set
Keeping 'em Running
1990 300SEL
1994 E320
1989 E300
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Old 10-15-2007, 03:24 PM
Registered User
Join Date: Apr 2005
Location: Northern Louisiana
Posts: 448
Ooh, OOh! this happened to me this weekend; I thought it had something to do with trying the cruise control. I made about a 100 mile trip in the '86 420SEL; on the return I noticed the odo was not registering. I made a stop; when I resumed my return trip later, the odo worked again. Ghosts. I had tried the CC on the return trip to see if I could get it to work and it did, worked great all the way. Hummmm... randy
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Old 10-15-2007, 08:28 PM
crhenkel's Avatar
Registered User
Join Date: Mar 2001
Location: Decatur, Illinois, USA
Posts: 616
odometer gears stripped or broken. Buy new gears, pull instrument cluster and replace. very common to happen, gears get soft and break. Not a hard fix.
Christopher Henkel
1990 190E 2.6 - Arctic white SOLD
1986 190E-16v - Blauswartze
1993 300CE - SOLD
2003 W208 CLK 320 Cabriolet - Magma Red
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Old 10-16-2007, 12:10 PM
Join Date: Oct 2007
Location: pittsburgh,pa
Posts: 3
odometer inop

i want to thank you all for your help i will look into replacing the odometer gears and see if that works
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Old 10-16-2007, 06:23 PM
Bob's your uncle
Join Date: Aug 2007
Location: Charlotte, NC
Posts: 76
Look here:
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Old 06-05-2013, 03:32 AM
Doktor Bert's Avatar
Das Sturm Uberdoktor
Join Date: Jan 2005
Location: Palm Springs, CA.
Posts: 2,670

All my plastic gears are good on my R107 unit and if I turn the pot metal gear by hand, both the Odo and Trip Odo advance, WTF????
Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013

100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership
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