LI46.35-P-062791

Model Series 253: Noticeable Vibrations In Steering Wheel
Topic number
LI46.35-P-062791
Version
12
Function group
46.35 - Electrical steering
Date
4/29/22
Validity
Model 253, up to manufacturing date
Reason for change
Remedy revised.
Reason for block
Software update still to come.
Complaint
1. Vibrations noticeable in steering wheel when front axle is excited while driving at a speed above 40 mph 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).
If this measure is unsuccessful, do not perform any further repairs.
An update will be published as soon as revised software is available.
Symptoms
Power transmission > Drive shaft > Propeller shaft > Function > Vibration/out-of-balance
Power transmission > Drive shaft > Axle shaft > Function > Vibration/out-of-balance
29.04.2022 14:48:42
© Copyright Mercedes-Benz AG
JKANTAR
Page 1 / 2
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
29.04.2022 14:48:42
© Copyright Mercedes-Benz AG
Time
JKANTAR
Damage
code
Note
4649490
Electric rack-and-pinion steering
control unit - Software release
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