LI46.35-P-062791

Noticeable Vibrations At Steering Wheel
Topic number
LI46.35-P-062791
Version
13
Function group
46.35 - Electrical steering
Date
6/13/22
Validity
Model 253 and 293.
Reason for change
Complaint
1. Vibrations noticeable at steering wheel when front axle is excited when driving at a speed between 65 km/h and
130 km/h over an obstacle.
•
•
•
Driving over deeply recessed manhole covers
Driving over cross joints
Driving over extreme surface undulations
2. Permanent or long-lasting vibrations at specific speed or engine speed noticeable on steering wheel.
•
Roadway surface excitations when DTR+Q is switched on
Cause
Control oscillations in the electric power steering.
Remedy
Perform software update of electric power steering (N68).
Symptoms
Power transmission > Drive shaft > Propeller shaft > Function > Vibration/out-of-balance
Power transmission > Drive shaft > Axle shaft > Function > Vibration/out-of-balance
Chassis/suspension > Wheels/tires > Tire properties > Vibration/out-of-balance
Chassis/suspension > Steering system > Steering wheel > Vibrates
Chassis/suspension > Steering system > Steering wheel > Pulses
Operation numbers/damage codes
Op. no.
Operation text
13.06.2022 16:54:49
© Copyright Mercedes-Benz AG
Time
JKANTAR
Damage
code
Note
Page 1 / 2
4649490
13.06.2022 16:54:49
© Copyright Mercedes-Benz AG
JKANTAR
Electric rack-and-pinion steering
control unit - Software release
Page 2 / 2