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#1
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'94 C280 odometer not storing accumulated mileage
I've just put this car on the road after it's been sitting a few years. I write down the odometer reading when getting gas and put in $10 last week. I know I drove it at least 40 miles this weekend but the odometer reads less then then when I filled up. When driving the mileage does register and goes up. I do disconnect the battery after driving out of habit because it may be weeks before I drive it again but that shouldn't affect the odometer memory. Does the instrument cluster have some internal battery that needs replacing?
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#2
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No, just a bad cluster.
Find a good used one with similar mileage
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator |
#3
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Going to be hard to find one in the junkyard under 100K like this car.
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#4
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I do not know about MBZ cluster and it would be hard to believe the ODO does not register mileage if the cluster shows speed correctly.
All modern cars use 'drive-by-wire' technology. A sensor in the drive axle generates pulses which is fed to the on-board computer to calculate speed and distance travel. If the car registers speed correctly ( the pulse is converted to an analogue signal to drive the speedo ) then the ODO should go up as expected. The ODO reading is only a counter in the car's computer. Removing the battery has no effect as the counter is stored in non-volatile ram or flash, similar to USB drive.
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Not MBZ nor A/C trained professional but a die-hard DIY and green engineer. Use the info at your own peril. Picked up 2 Infractions because of disagreements. NOW reversed. W124 Keyless remote, PM for details. http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped.html 1 X 2006 CDI 1 x 87 300SDL 1 x 87 300D 1 x 87 300TDT wagon 1 x 83 300D 1 x 84 190D ( 5 sp ) - All R134 converted + keyless entry. |
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