As far as I know, there isn't any feature like that on your MB. It sounds like you're experiencing a harsh, or premature downshift. Most of the 722.9 transmission issues have been sorted out, but there's still a few here and there. You're dealer shouldn't be surprised when you ask them about it. They'll probably update the software in the transmission and/or engine control units.

And, according to the Asst Mgr of the Dealer Factory Support team in Vance last month, they are still working on trying to find a final solution to the 7G-Tronic problems.

His recommendation was: If you are not experiencing problems with the 7G-Tronic, be happy; and do not let the dealer do any flash upgrades to it.

They hope to have that final solution available by September.

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1973 280SE 4.5 (Sold)
1984 LWB 280GE (Sold)
2000 G500 NMLE - "Deep Throat"
2007 ML320 CDI (Sold)
2010 Porsche Cayenne S Transsyberia TipTronic (Sold)
2010 Audi Q7 3.0 TDI (Sold and Sorely Missed)
2014 ML350 BTC
2015 Audi Q7 3.0 TDI (On Order)

The downshift isn't harsh, rather a pleasant feel as if the brakes were receiving a progressively larger boost. If it is not harmful I enjoy it.

Jim W.

My 2004 ML350 downshifts to hold my speed as I go downhill too. I was surprised the first time I expected to pick up speed as I coasted down a big hill and had the transmission downshift.

So far as I know all the transmissions on the gas ML's downshift automatically to maintain your speed as you go downhill. I don't know about the diesels but it probably is the same. I believe this feature is covered in the manual.

I know I have the 722.6 transmission and you have the 722.9 but I believe the feature is on both.

Joe

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2004 ML350 Black with charcoal leather, OEM Hitch, Rhino step, Bose, Navigation, OEM front guard, Comfort package, Entertainment package, Sunroof, heated seats.

Where I really notice, and like, the downshifting is approaching a stop sign or light. It's a very nice feel. We have had two other ML's that did not do it, nor does our 1978 diesel.

Today is a scouting trip to see if the salt was washed off the roads so we can take the 300SD out for the season.

Jim W.