V481404 2038140

Technical Bulletin
Model(s)
Year
Eng. Code
Trans. Code
VIN Range From
VIN Range To
Touareg
2011-2014
All
All
All
All
Condition
48 14 04 September 3, 2014 2038140
Power Steering Rack Vibrations in Steering Wheel
The customer may state:
1. Shimmy/rotational vibration in the steering wheel at constant speed.
Shimmy/rotational vibrations in the steering wheel at various speeds.
2. Shimmy/rotational vibrations in the steering wheel when braking.
3. Vibration felt in the entire vehicle:
The vibration can be felt in the seat surfaces, in the underbody, in the foot well, or in the pedal.
The vibration is more prevalent when braking/accelerating.
Technical Background
Flatspots:
After a short stationary period (sometimes as little as a few hours) flat spots can develop after the warm tire has
cooled down. The effect the flat spotted tire has on the vehicles performance depends on the type, dimension,
make, and pressure of the tire.
Flat spots alter the radial force fluctuation and must be driven out before balancing the wheel.
Effects of increased radial forces on the vehicle:
Increased radial forces on the front or rear tires cause vibrations in the vehicle.
Increased radial forces on the front tires amplified by braking can also lead to vibrations in the vehicle.
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© 2014 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.
Technical Bulletin
Explanations and definitions:
Radial force variation (RFV)
The radial force or wheel load is the force with which
a tire is compressed (Figure 1) Tires have softer and
stiffer areas along their circumference, which is
illustrated using springs (Figure 1, A and B). Figure 1
shows the same tire at different points of rotation (A
and B), as it rolls on level road with constant load
(radial force).
Figure 1
Tip:
If this wheel rolls, the center of the wheel rises and falls X distance with a constant wheel load (illustration 1, arrow
1). This change in arrow 1 by X distance can be felt in the vehicle as vibration or shaking of the steering wheel.
Note:
The attached questionnaires must be filled out and submitted to the chassis team email box
[email protected] and kept on file for warranty purposes.
Production Solution
No production change required.
Service
Procedure:
• Complete the following steps to eliminate vibrations (flat spots) and radial force fluctuations.
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© 2014 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.
Technical Bulletin
Warm balancing / matching of wheels
1. Check all tires for the following points:
• Tread and side wall damage (for example: broken tread, impact damage/bubbles and so on).
• Tread depth.
WARNING:
The manufacturer recommends:
Replace tires damaged by external influences (for example impact damage/bubbles and so on). Damaged tires
are an increased safety risk.
Replace tires with a tread depth of under 4 mm, otherwise this procedure will not be totally effective.
2. Check and correct the tire pressure of every wheel to at least 36 PSI or the permitted maximum specified value.
3. Perform a test drive of at least 18 miles, if possible on a highway, traffic and road conditions permitting over
different speed ranges (up to 60 mph).
Note:
Make sure that you do not endanger yourself or others during the test drive.
During the test drive observe all traffic laws.
4. After the road test, raise the vehicle immediately and begin removing the wheels for balancing.
Tip:
New flat spots can develop during a short stationary period while the tires cool down so it is important to put the
vehicle on the lift immediately following the test drive.
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© 2014 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.
Technical Bulletin
5. Balance the wheels on a stationary balancing machine.
Tip:
The manufacturer recommends to balance / road force the wheels on the -VAS 6230 A/B- Hunter machine.
Measure, balance and (if necessary) match the wheel according to the instructions of the equipment.
When tightening the wheel on the balancing machine make sure the contact surfaces of flange and wheel are
clean, the wheel is correctly centered and a suitable cone and/or flange are used. We recommend the use of a
five-finger flange.
Note:
The fluctuation of the radial force does not depend on the turning direction and is measured as the difference
between maximum and minimum radial force (road force).
If the radial force cannot be reduced below the specified value of 26 lbs. by matching, replace the tire.
The wheels must be installed on the vehicle according to the instructions of the manufacturer and the repair
manual.
Secure the wheel on the vehicle
• Check whether the contact surfaces on the brake disc and wheel are free of corrosion and dirt, clean if
necessary.
• Check whether the centering hole of the wheel and the centering of the hub are free of corrosion and dirt, clean
if necessary.
• The wheels holes and the wheel bolts must be free of dirt and corrosion. It must be possible to lightly turn the
wheel bolts by hand without using a tool.
Note:
Severely corroded or damaged bolts must be replaced according to the repair manual/ETKA.
• Make sure that the wheel bolts are the correct version and length.
• Align the position of the brake disc holes/hub threads as shown in Figure 2. Insert the wheel on the hub and
secure it with two opposite wheel bolts (number 1 and 2) loosely by hand. Screw in the remaining wheel bolts
consistently by hand, it must be possible to lightly turn the wheel bolts. Ensure the precise centering. If
necessary, release the wheel by lifting it slightly. Initially tighten the wheel bolts crosswise with 30 Nm.
• Lower the vehicle to the floor.
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© 2014 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.
Technical Bulletin
• Tighten all the wheel bolts crosswise with the
specified tightening torque with a torque wrench
by hand. The tightening torques of the vehicle
manufacturer must be observed. Note any
deviating values for steel or alloy wheels.
Figure 2
• Ensure the correct vehicle-related tire pressure.
• Test drive the vehicle.
• Assess the vehicle again in the affected speed range.
Tip:
If the vibrations persist, call the helpline for further assistance. Before calling the helpline all steps in this bulletin
must be completed and documented. Please be as specific as possible regarding the steps used and customer
complaint when calling the helpline.
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© 2014 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.
Technical Bulletin
Warranty
To determine if this procedure is covered under Warranty, always refer to the Warranty Policies and
1)
Procedures Manual
Model(s)
Year(s)
Eng. Code(s)
Trans. Code(s)
VIN Range From
VIN Range To
Touareg
2011-2014
All
All
All
All
SAGA Coding
Claim Type:
Use applicable Claim Type
Damage
Service Number:
HST
Damage Location
(Depends on Service No.)
--
Use applicable when
indicated in ElsaWeb
(L/R)
Code
4405
0013
Parts Manufacturer
1)
Touareg
WWO
2)
3)
Labor Operation :
Check Tires
44400199 = 10 TU
Check all tires:
• Damage
• Tread depth
• Tire pressure
3)
Labor Operation :
Balance 2 wheels
44059400 = 50 TU
Or
Balance 4 wheels
44059404 = 90 TU
3)
Labor Operation :
Clean 2 front wheel hubs
40643050 = 10 TU
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© 2014 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.
Technical Bulletin
AND/OR
Clean 2 rear wheel hubs
42683050 = 10 TU
Diagnostic Time
4)
GFF Time expenditure
01500000 = 00 TU max.
NO
Road Test
01210002 = 10 TU
YES
01210004 = 10 TU
Technical Diagnosis
01320000 = 00 TU max.
NO
Claim Comment: Input “As per Technical Bulletin 2038140” in comment section of Warranty Claim.
1)
Vehicle may be outside any Warranty in which case this Technical Bulletin is informational only
2)
Code per warranty vendor code policy.
3)
Labor Time Units (TUs) are subject to change with ELSA updates.
4)
Documentation required per Warranty Policy Procedures Manual.
Required Parts and Tools
Part No:
Part Description
Quantity
See ETKA
Wheel Weights
As required
Tool Description
Tool No:
Wheel Balacing Machine
VAS 6230 A/B- Hunter
Or equivalent
Additional Information
All part and service references provided in this Technical Bulletin are subject to change and/or removal.
Always check with your Parts Dept. and Repair Manuals for the latest information.
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© 2014 Volkswagen Group of America, Inc.
All rights reserved. Information contained in this document is based on the latest information available at the time of printing and is subject to the copyright and other
intellectual property rights of Volkswagen Group of America, Inc., its affiliated companies and its licensors. All rights are reserved to make changes at any time without notice.
No part of this document may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, or
otherwise, nor may these materials be modified or reposted to other sites, without the prior expressed written permission of the publisher.
Vibrations, steering wheel vibrations and juddering
A test drive with the customer is necessary.
Divide the complaint into the following symptoms:
VIN number: ______________
FRED report number: ______________
The complaint occurs …
at the beginning of the journey and gradually eases or disappears altogether
at constant speed the and remains while driving at that speed
in acceleration and overrun and when pressing the clutch or in the N position
in acceleration and overrun, but not when pressing the clutch or in the N position
in acceleration and overrun. It involves a juddering/vibrating in driving direction
with pressed clutch or position N at an engine speed range of
rpm to
rpm.
stronger when accelerating. Occurs in acceleration and overrun, but eases when the vehicle is put in N
only when braking, whereby the pedal pressure is
light,
medium,
when braking the complaint gets worse, when the pedal pressure is
strong
light,
medium,
strong
The complaint can be felt in the*:
driver or passenger seat,
steering wheel,
shifter lever,
pedal,
footwell,
centre console or tunnel,
rear seats.
It involves*:
vehicle vibrations,
steering wheel vibrations,
traction disruption,
juddering,
misfiring,
humming or droning noises.
Additional information*:
 speed of
mph to
mph
 since when does the complaint occur?
 with summer
or winter
tires
 in which gears or driving modes:
(since x weeks, since vehicle purchase or tire change,…)
*select all that apply
Tire information sheet
1. Customer complaint
_____________________________________________________________________________________
_____________________________________________________________________________________
_____________________________________________________________________________________
Be as specific as possible. Speed range, vibrations in complete vehicle, vibrations (only) in steering wheel, during
acceleration, vibrations (only) when braking or accelerating, vibrations permanently or from stop, etc.
2. Vehicle data
VIN number:_______________
Vehicle delivery date: _____/______/_____
Mileage of affected tires:____________
Vehicle mileage:____________
Urban/country/highway driving in %: ______/_______/______ Part number of wheel:____________
3. Tire information (cold condition)
Wheels installed? Factory
…VW accessories
…After Market
Make of tire: __________________
Tire type: __________________
Dimension: _______________
Manufacturer code: ____________(e.g.: AO, AOE, R01)
Make of balancing machine:_____________
Last calibration date of machine: ___________
Front left
Front right
Rear left
Rear right
DOT (last four digits mm-yy)
Tyre pressure in bar
Tire pressure according to label
correct
correct
correct
correct
incorrect
incorrect
incorrect
incorrect
Tread depth in mm
outside / center / inside
Existing wheel weights
Outer/inner balancing track (size)
Damage on tire (yes/no)
Damage on wheel (yes/no)
4. Tire information after the balancing
Warm Balance
(Conduct a test drive of at least 13 miles, at highway speeds (60 mph) if possible)
Front left
Front right
Tire pressure in bar
Road force value in pounds (lbs)
before matching
Road force value in pounds (lbs) after
matching
Missing weight per level/track
in gram outside/inside
*Road force values can be established with Hunter tester VAS 6230
Rear left
Rear right