i have a 94 e420 i noticed today that my mileage meter is not working nor is the trip meter but hte speedometer is working. could someone help with this plus i have another problem i have a miss and a tapping sound from engine on the driver side i changed the wires,plugs,oxygen sensor,oil,filter could someone help with this problem as well thanks guys

The gear that drives the odometer and trip meter has likely jumped track or broken a cog. You will need to remove the instrument cluster to replace it. A search will reveal what you need to do to get access to it.

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1989 300CE

See my post below. I received an email from Southern Electronics regarding this gear about 5 months ago, but I never got around to replacing it. Please let us know how it goes if you decide to tackle the job. The email references the picture in my post.

E420 Odometer Gear

Hello

The small gear is part # 10-022, 12 tooth gear cost is $28.00 which includes US Mail Priority to anywhere in the US. However the other two gears in this picture are made of the same poor plastic and also break. The other two gears are a 12/48 gear which is $32.00 and 16/48 gear which is $32.00. I would recommend replacing all of the defective gears but if you would just like to purchase the small 12 tooth gear you can order it over the phone using a credit card or on my website using PAYPAL. If you have any more questions please let me know.



Best Regards,

Leigh Anne Rogers
General Manager
SOUTHERN ELECTRONICS Inc.
Authorized Car Radio and Speedometer Repair.
730-A Research Road
Richmond, VA 23236, USA

Tel: 1-800-446-2880 USA Toll Free,
Tel: 1-804-423-1100 USA Local and International
Fax: 1-804-423-1059
Business Hours 8:00 a.m. - 5:30 p.m. Weekdays (Eastern Time, -5 Hr. GMT)
Best time to call 10-4.
* * * *
Http://www.InstrumentClusters.com Speedometer & Cluster Repair

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1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles