Function Of Gear Change
WARNING: This page is about a different car, the 2004 Mercedes-Benz C230 and 2003 Mercedes-Benz C230. However, it is still accessible from the selected car via links, so may be relevant.
Operation
Every gear change is triggered by the electronic transmission control (ECT). Each shift sequence is assigned a control block. Each of these contains one overlap regulating valve, one holding pressure shift valve, one shift pressure shift valve, one common command valve and one electromagnetically actuated switchover valve (upshift/downshift solenoid valve).
Actuation of the solenoid valve switches over from stationary mode to the shift phase.
When the gear change is complete the solenoid valves are no longer actuated as the different gears are subject to a self-hold function in stationary mode.
- Shifting N to D (1st gear), Function
See SHIFTING N TO D (1ST GEAR), FUNCTION .