Mercedes Benz Truck R 320 BLUETEC Technical S-46_50-34A Date: 090204
Steering - Speed Sensitive Steering Malfunctions/DTC's
Date: February 4, 2009
Order No.: S-B-46.50/34a
Supersedes: P-B-46.50/34 dated March 27, 2006
Group: 46
Revision History
Revision Date Purpose
a 2/4/09 Applicable Models Updated. Content Revised, Parts and Warranty Info. Updated
- 3/27/06 Initial issue
SUBJECT:
Models 164, 171, 203, 209, 211, 215, 216, 219, 220, 221, 230, 251 with code 213 (Speed Sensitive Power Steering - Parameter Steering)
Speed Sensitive Power Steering (Parameter Steering) Malfunction
If you receive customer reports in the above model vehicles of malfunctioning Speed Sensitive Power Steering (Parameter Steering), this may be due
to the following causes.
Mercedes Benz Truck R 320 BLUETEC
Page 208
1. Speed sensitive power steering valve, electrical malfunction.
2. Electrical connection on speed sensitive power steering valve damaged or broken.
As a result, the fault codes above may be stored in the ESP control unit.
To resolve issues, replace the speed sensitive power steering valve with a new part as per the below procedure.
Note:
It is not necessary to replace the entire rack-and-pinion steering system.
1. Remove steering gear as per respective WIS document shown above.
2. Remove loose dirt from steering gear and clean area around speed sensitive power steering valve. Do not use any cleaning agents!
Important!
Ensure that the utmost cleanliness is maintained at the work area during the following steps!
3. Unscrew bolts (Figure 1, 2) attaching speed sensitive power steering valve (Figure 1, 1).
4. Replace the speed sensitive power steering valve (Figure 1, 1). Ensure that the new sealing ring is seated properly. Attach speed sensitive power
steering valve (Figure 1, 1) by screwing in bolts (Figure 1, 2), observe torque (5 Nm +/- 0.3 Nm).
5. Install steering gear, refer to the respective WIS document as stated in Step 1
Note:
There are two versions of power steering high pressure lines that must be detached when removing steering gear. The earlier version has a slotted
support ring, which can be replaced individually. The new version does not have a slotted support ring. In this case, the complete power steering
high pressure line must be replaced (see parts list).
6. Check steering for leaks.
Mercedes Benz Truck R 320 BLUETEC
Page 209
7. Check speed sensitive - parameter function using the DAS, read out fault memory and erase if necessary.
A toe adjustment after removing/installing the steering gear is no longer necessary according to the latest findings (refer to the latest version of the
DTB P-B-46.20/28).
Note:
Always refer to EPC for the latest information on parts.
Parts Information
Note:
The following allowable labor operations should be used when submitting a warranty claim for this repair. This information has been generated on
February 4, 2009. Please refer to Netstar --> Star Teklnfo --> Star Time for the most current labor time allowance.
Mercedes Benz Truck R 320 BLUETEC
Page 210
In Case of Warranty, use the table above.
Steering - Speed Sensitive Steering Malfunctions/DTC's
Date: February 4, 2009
Order No.: S-B-46.50/34a
Supersedes: P-B-46.50/34 dated March 27, 2006
Group: 46
Revision History
Revision Date Purpose
a 2/4/09 Applicable Models Updated. Content Revised, Parts and Warranty Info. Updated
- 3/27/06 Initial issue
SUBJECT:
Models 164, 171, 203, 209, 211, 215, 216, 219, 220, 221, 230, 251 with code 213 (Speed Sensitive Power Steering - Parameter Steering)
Speed Sensitive Power Steering (Parameter Steering) Malfunction
If you receive customer reports in the above model vehicles of malfunctioning Speed Sensitive Power Steering (Parameter Steering), this may be due
to the following causes.
Mercedes Benz Truck R 320 BLUETEC
Page 208
1. Speed sensitive power steering valve, electrical malfunction.
2. Electrical connection on speed sensitive power steering valve damaged or broken.
As a result, the fault codes above may be stored in the ESP control unit.
To resolve issues, replace the speed sensitive power steering valve with a new part as per the below procedure.
Note:
It is not necessary to replace the entire rack-and-pinion steering system.
1. Remove steering gear as per respective WIS document shown above.
2. Remove loose dirt from steering gear and clean area around speed sensitive power steering valve. Do not use any cleaning agents!
Important!
Ensure that the utmost cleanliness is maintained at the work area during the following steps!
3. Unscrew bolts (Figure 1, 2) attaching speed sensitive power steering valve (Figure 1, 1).
4. Replace the speed sensitive power steering valve (Figure 1, 1). Ensure that the new sealing ring is seated properly. Attach speed sensitive power
steering valve (Figure 1, 1) by screwing in bolts (Figure 1, 2), observe torque (5 Nm +/- 0.3 Nm).
5. Install steering gear, refer to the respective WIS document as stated in Step 1
Note:
There are two versions of power steering high pressure lines that must be detached when removing steering gear. The earlier version has a slotted
support ring, which can be replaced individually. The new version does not have a slotted support ring. In this case, the complete power steering
high pressure line must be replaced (see parts list).
6. Check steering for leaks.
Mercedes Benz Truck R 320 BLUETEC
Page 209
7. Check speed sensitive - parameter function using the DAS, read out fault memory and erase if necessary.
A toe adjustment after removing/installing the steering gear is no longer necessary according to the latest findings (refer to the latest version of the
DTB P-B-46.20/28).
Note:
Always refer to EPC for the latest information on parts.
Parts Information
Note:
The following allowable labor operations should be used when submitting a warranty claim for this repair. This information has been generated on
February 4, 2009. Please refer to Netstar --> Star Teklnfo --> Star Time for the most current labor time allowance.
Mercedes Benz Truck R 320 BLUETEC
Page 210
In Case of Warranty, use the table above.
