Service light on ... HELP

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jsegura525@aol.com - 18 Mar 2007 03:43 GMT

Hello folks.
I have a 91 240 and the service light turns on at start of car then
about a minute or two later it goes away, this happens every time
I start her up. I have pushed the button on the plastic over the
odometer,
on the bottom right corner, with a tiny screwdriver and I can here it
click,
but no luck.
On my 89 240 there is a switch/button on the back of the odometer,
but
I cant find one on the 91 240. My odometer is stuck at about 153,XXX
miles,
I am wondering if because the odometer is stuck, the light is stuck on
too,
even if I push it to turn off.
Please Help...
Joseph

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Duane - 18 Mar 2007 13:13 GMT

Remove the cluster, and you will see the lever that needs to be pushed. If
it turns the light off and the odometer then works, great. If it does not,
and you do not rely on the Service light to remind you of oil changes and
the like, when the cluster is out, remove the bulb.

If the odometer does not come back, the drive gear is most likely damaged,
from pushing the trip reset while moving IMOP. A gear meshing with the motor
needs replacement.

Duane

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jsegura525@aol.com - 19 Mar 2007 04:04 GMT

> Remove the cluster, and you will see the lever that needs to be pushed. If
> it turns the light off and the odometer then works, great. If it does not,
[quoted text clipped - 6 lines]
>
> Duane

Thanks, I did that and found the gear that is missing some teefis....

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Son_Worshipper - 20 Mar 2007 16:58 GMT

On Mar 18, 10:04 pm, jsegura...@aol.com wrote:

I don't see the broken gear as causing the service light problem. I
had a gear with missing teeth as well - on an '87 240. Go to
odometergears.com. They sell gears for $25 each. I have bought gears
for my 240 and 2 850's. In each case, I bought both gears. For an
extra $25 you can avoid the other gear breaking in the near future.
In my job, I am reimbursed for mileage and can't live without an
odometer. Replacing the gears is the best way to go. In the past, I
bought a couple of replacement clusters - with broken gears, so I
can't recommend going that route. You may want to replace burned out
bulbs while you are at it and/or remove the service light.

Terry

> > Remove the cluster, and you will see the lever that needs to be pushed. If
> > it turns the light off and the odometer then works, great. If it does not,
[quoted text clipped - 8 lines]
>
> Thanks, I did that and found the gear that is missing some teefis....

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