Dodge 2008 Ram 4500 - Manual (Page 285)

DIESEL EXHAUST BRAKE (ENGINE BRAKING) –
IF EQUIPPED
The exhaust brake feature will only function when the
driver turns the exhaust brake switch to the ON position.
Once the switch is in the ON position and the vehicle is
moving faster than 5 mph (8 km/h); the exhaust brake
will automatically operate when the driver removes
pressure from the accelerator pedal. Exhaust braking is
most effective when the engine RPM is higher. The
automatic transmission has been programmed to down-
shift more aggressively when the exhaust brake is en-
abled to increase brake performance.
Exhaust Brake Switch
STARTING AND OPERATING 283
5