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51 09 20_G01 WIND NOISE DIAGNOSIS

SIB 51 09 20
G01 WIND NOISE DIAGNOSIS

2020-03-05

MODEL
E-Series
G01

Model Description
X3 Sports Activity Vehicle

Production Date
September 1st, 2017 to October 1st,
2019.

SITUATION
Customer complaint of hissing or wind noise present in the interior of the vehicle at speeds above 60 mph.

CAUSE
The following areas and defects may cause this complaint:

1. A pillar gutter trim not correctly installed.
2. Door seal not correctly installed, or a gap exists between the seal and the body.
3. Side view mirror cover deformity.
4. Improper door adjustment.
5. Side view mirror assembly to door alignment, and triangle seal deformity.

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51 09 20_G01 WIND NOISE DIAGNOSIS

PROCEDURE
1. Test drive the vehicle to reproduce the customer complaint.
Was the noise able to be reproduced?
Yes - Refer to the attachment (G01 Wind noise diagnosis).
No - Continue standard diagnosis.

2. Test drive the vehicle to verify noise has been eliminated.

PARTS INFORMATION
Obtain and confirm the part numbers for your specific vehicle by entering the chassis number in either ETK
or AIR which takes into account specific equipment and/or options.
Part Number
51 33 7 956 521
51 24 9 500 543

Description
Adhesive tape
Foam pad

Quantity
Up to 2
Up to 2

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51 09 20_G01 WIND NOISE DIAGNOSIS

WARRANTY INFORMATION
Eligible and Covered Work/Repairs
When used to repair a verified defect in materials or workmanship (excluding issues caused by previous
body repairs), eligible repairs are covered under the terms of the BMW New Vehicle Limited Warranty for
Passenger Cars and Light Trucks.
To submit a claim, please following the established and applicable warranty policy and procedures
(Labor/Part/Sublet – bulk materials) that apply to the repair being performed.
Refer to AIR for the corresponding defect code, flat rate labor operations and the flat rate unit (FRU)
allowances (including diagnosis with separate punch times).
Defect Code:

4151004100
5116004100
5133203900
5121103900
4121013900
4121033900

Front door poorly fitted
Exterior mirror cover cap poorly fitted
Mirror triangle seal, distracting noises
Front outer window cavity cover strip, distracting noises
A-pillar distracting noises
Front cowl panel, distracting noises

Supporting Materials
picture_as_pdf B510920_Attachment (G01 WIND NOISE DIAGNOSIS).pdf

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Attachment to B510920

March 2020

G01 WIND NOISE DIAGNOSIS AND REPAIR
INSTRUCTIONS
1. Inspect the gutter trim for proper installation.
• Re-install if necessary to be flush with the A pillar body. Refer to
51 31 030 removing and installing gutter strip.

2. Inspect door seal for proper installation.
• Image “A” shows a incorrectly installed seal causing a gap between
the seal and the body.
• Image “B” shows the the gap when the door is open.
• Image “C” shows a properly installed seal with no gap present.
• Properly install the seal.
• Reinstall or adjust as needed (refer to REP 51 71 115)

3. If noise is suspected to be caused by the mirror cap:
• Tape the mirror cap channel and test drive the vehicle.
• If the noise is eliminated, inspect the gap between the mirror cap and
mirror panel must be even.
• The water channel gap should be 2 mm (plus / minus 0.4 mm). Larger
gap may create whistling noises.
• If the gap is enlarged and the noise is eliminated when taping the
mirror cap, the mirror cap must be exchanged.

4. Inspect the door proper alignment and gaps.
• See repair instructions "41 51 004 Adjusting front left or right the
door".
• Adjustment range 0 mm + 1.9 mm protrusion / 0.3 mm short length.
Protrusion is recommended, short length should be avoided.

5. Inspect the side view mirror assembly to door for proper fitment.
• If the assembly is not properly aligned, remove the assembly and
inspect proper installation and insulation foam.

• Seal the door flange mirror connector access with adhesive tape with
part number 7956521 (Image A).
• Inspect the mirror assembly insulation foam for damage or deformity
and replace if necessary. (Image B)

6. If noise is coming from the front doors without any of the above
mention defects.
• Remove the window frame cover. Refer to repair instructions
51 32 420 remove and install window frame.
• Apply foam strips part number 9500543 on the door frame just below
the door main seal as shown below.

7. If noise is coming from the rear door without any of the above mention
defects:
• Check the positioning of the window bar foam at the bottom of the rear
door.
• Remove trim panel of the rear door.
• Check whether the foam is correctly positioned at the bottom of the
window bar. Image “A” shows incorrect installation.
• Image “B” shows foam correctly installed. Must not sit below the
capping line.