Flashing Low Range light and the transmission on 2002 ML-55 - Mercedes-Benz Forum
 
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#1 (permalink) Old 07-13-2010, 08:03 PM
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Flashing Low Range light and the transmission on 2002 ML-55

Recently the low range indicator light on my 2002 ML-55 began to flash. It didn’t stay on it just flashed most recently 12 times and then went out. Thanks to the information in this great forum I know what the problem is and plan to crawl under the car and deal with the motor. However my question is whether leaving the motor alone for a time when I can attend to the problem will adversely affect the transmission. Any help will be appreciated. Thanks. Vince
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#2 (permalink) Old 07-13-2010, 08:09 PM
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Originally Posted by vvrjrlaw View Post
Recently the low range indicator light on my 2002 ML-55 began to flash. It didn’t stay on it just flashed most recently 12 times and then went out. Thanks to the information in this great forum I know what the problem is and plan to crawl under the car and deal with the motor. However my question is whether leaving the motor alone for a time when I can attend to the problem will adversely affect the transmission. Any help will be appreciated. Thanks. Vince
You have a 02 55. Consider yourself fortunate because those are rare. In any case, I have no idea whether you'd damage anything but my feeling is that there's nothing actually wrong with the LR hardware. It's most likely electronic gremlins. Put it in LR and gage performance. If all is fine, then leave it alone until you can get to it. If you're really worried, have it diagnosed at a MB shop and then decide what to do.

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#3 (permalink) Old 07-13-2010, 10:25 PM
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Several people have suggested cycling the low range on, driving a few feet, they cycling the low range off every month or so to keep everything working. I thought that was a good idea and now do that myself whenever I remember. I usually run out and do the procedure every time someone posts a transfer case issue. Thanks for the reminder.
Mike
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#4 (permalink) Old 07-15-2010, 07:36 AM
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I guess my only concern is whether the flashing light is telling me the transmission may be partially engaged in the low range in which case I would need to attend to the problem immediately
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#5 (permalink) Old 07-15-2010, 08:06 AM
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If you can cycle the transfer case into low range and drive it for a few feet then cycle the transfer case back into hi range with the low range light operating normally then you should be OK. You should hear a clunk under the vehicle each time you cycle in and out of low range. When you go into and out of low range the light should blink 3 or 4 times while the transfer is taking place.
Mike
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#6 (permalink) Old 07-15-2010, 11:19 AM
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Talking YOU do that too....??!!!

Quote:
Originally Posted by Mike's ML View Post
Several people have suggested cycling the low range on, driving a few feet, they cycling the low range off every month or so to keep everything working. I thought that was a good idea and now do that myself whenever I remember. I usually run out and do the procedure every time someone posts a transfer case issue. Thanks for the reminder.
Mike
Ditto.
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#7 (permalink) Old 07-18-2010, 10:05 AM
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I'm sorry I guess I wasn't clear enough but when I attempt to engage into the low range it (the unit) won't engage. The light flashes slowly and then flashes quickly and goes out. Obviously the motor isn't operating properly and it appears that its a function of non use which means I must get under the car and "persuade" the motor to cycle. I just haven't had the time to "persuade" it and want to make sure its ok to continue to drive it until I get the time. Thanks
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#8 (permalink) Old 07-18-2010, 10:21 AM
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Hello vvrjrlaw,

As far as I know, it's okay to drive the truck with the low range not activating, as you describe, until you get the transfer case motor fixed.

It shouldn't have any negative effects on the truck's other functions at all; you just wont be able to engage low range that's all.
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#9 (permalink) Old 07-18-2010, 03:16 PM
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Thumbs up

Thanks to everyone that helped me answer this problem. The beauty of the forums is that it is a learning experience and I am as happy to contribute as I am to learn.
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