Mercedes-Benz 2005 E -Class Wagon Operator's Manual page 97

Safety and Security
Driving safety systems
!
Do not tow with one axle raised.
Otherwise the transfer case can be
damaged, which is not covered by the
Mercedes-Benz Limited Warranty.
!
Performance testing must only be con-
ducted on a two-axle dynamometer.
Otherwise the transfer case can be
damaged, which is not covered by the
Mercedes-Benz Limited Warranty.
96
!
Because of the ESP's automatic opera-
tion, the engine and ignition must be
shut off (SmartKey in starter switch
position 0 or 1 or KEYLESS-GO
start/stop button* in position 0 or 1)
when the parking brake is being tested
on a brake test dynamometer.
Active braking action through ESP may
otherwise seriously damage the front
or rear axle brake system.
Operational tests with the engine
running can only be conducted on a
two-axle dynamometer.