Hi Vic.
Sprinter (2004) has an I5 2.7l engine and Vito (2010) has an I4 2.2l engine, both automatics.
I was going to mention the I4. That likely makes the ECM aka ECU even that much more different. The cruise control is an integrated part of the ECM programming.
When in cruise control mode.
The Vito actively turbo brakes if you are on a long down hill run, I read somewhere that the vane blades turn to give engine braking.
Both my NAS aka NAFTA 2004 and 2006 offer some engine braking when in cruise.
If my speed gets too far above cruise setpoint eventually the transmission will downshift.
The Vito is also more responsive to small changes in speed and will adjust very quickly.
A lighter vehicle? A different ECM? A 7 speed transmission?
Aren't you basically holding two different vehicles against each other?
The Sprinter seems to lag along for quite a while before reacting and adjusting, most times to the point where I have to tap the gear stick to wake it up, and no turbo braking.
Both my 2004 and 2006 are very "tolerant" of not being able to keep to set point. That is as opposed to some other brand vans which would pour on throttle and even downshift if the vehicle speed decreased even slightly. Personally I prefer the "tolerant" design.
The Sprinter turbo is vacuum controlled and the Vito is electronic.
The NAS aka NAFTA 2004 OM647 I5 engine has an electronic turbo actuator. The OM612 engine has the vacuum actuator. Both actuators are controlled by a solid state module design.
I was just wondering if anyone has heard of some upgrade?
I can't answer that question.
I can say that the cruise control on my 2004 140 2500 seems to respond exactly the same as the cruise control on my 2006 140 2500 Sprinter. Any 2004 upgrades that I might be missing should have been included OEM in my 2006. I notice no difference.
vic
