NHTSA ID Number: 11006105
Manufacturer Communication Number: 2071730/3
TSB/Document Date: 2024-08-07
Summary
Bentayga rear brake noise/squeal - Repair method depending on the brake noise frequency (Iron brakes only). Scenario 1 Vibration of 1.2 to 1.4 KHz is produced from the rear brakes whilst braking at low speed Whilst braking at low speed, a vibration of 1.2 to 1.4 KHz or 5 KHz can be produced from friction between the rear brake pad and disc resulting in rear brake noise/squeal Scenario 2 Vibration of 3.4 KHz is produced from the rear brakes While braking at low speed a vibration of 3.4 KHz can be produced during brake application at low speed resulting in rear brake noise/squeal Scenario 3 Vibration of 5 KHz is produced from the rear brakes whilst braking at low speed Whilst braking at low speed, a vibration of 5 KHz can be produced from friction between the rear brake pad and disc resulting in rear brake noise/squeal.
All authorised Bentley
Retailers must guarantee their workmanship for 12 months or12,000 miles
(19,300 kilometres), whichever occurs first
Wear and Tear and Service Items
Items where the lifetime of the component is or can be influenced by driving style and external
factors (Brake pads and brake discs) will only be considered under the terms of the Warranty for
a period of six months or 6,250 miles (10,060 kilometres), whichever occurs first. Beyond that
limit, the defects must be classified as wear and tear and will not be covered by the Warranty
Parts information
Scenario 1
Part number Description
36A 698 219
Quantity
Shim set for rear brake pads 4 (see Notes below)
G 052 560 A2 Vary Bond grease
1 = 1 x 100 gram tube
Do not order x1 tube of grease for each individual vehicle as the grease must be used on
multiple vehicles NOTE: x1 tube of grease should be sufficient for up to 15 vehicles
Should (x1) of 36A 698 219 be ordered the retailer will receive (x1) therefore the retailer
MUST order x4 shims
The retailer MUST claim for the total amount of shims received
For example: If (x4) shims are ordered, the retailer will receive (4) shims. Therefore, the
retailer must claim for (4)
Please note: The shims are reusable and can be transferred over to new brake pads when
required
Tip: Before transferring the shims over to new brake pads, the shims must be cleaned and
inspected to confirm there are no issues before fitment
INTERNAL
Scenario 2
Rear brake pad shim and grease application process Vibration of 3.4 KHz produced from the rear brakes
CAUTION
VERY IMPORTANT: The application of the grease MUST be exactly as shown/detailed ensuring the exact
amount of grease is applied to the locations shown
1)Install one shim to each rear brake pad as detailed below
VERY IMPORTANT: Referring to Figure 1, the design of the shims (A and B) are different in
appearance from the shims (C and D)
Hint: The shims listed above are supplied as part of the service kits as shown in the Parts information
section of this TPI
2) Referring to Figure 1 - Apply 6 dots of grease (< 1.0g in total) to the inside face of the clip on each
shim (x4 in total)
TIP: Grease application is the same process regardless of shim design
Figure 1
INTERNAL
Referring to Figure 2 - Using a suitable spatula spread the grease to an even layer condition (x4
shims in total)
Figure 2
3) Assemble the clip-on shim onto each pad, the pads MUST be fitted in the positions as detailed:
below
INTERNAL
VERY IMPORTANT: Referring to Figures 3,4,5 and 6, the design of the shims are different in
appearance and must be fitted as detailed
1 - Left hand outer pad (Figure 3) - 36A 698 219
Figure 3
2 - Left hand inner pad (Figure 4) - 36A 698 219 A
Figure 4
INTERNAL
3 - Right hand inner pad (Figure 5) - 36A 698 219 B
Figure 5
4 - Right hand outer pad (Figure 6) - 36A 698 219
Figure 6
4) Once each shim has been assembled to each pad - Squeeze together firmly to remove any excess
grease which comes out from between the new shim and the brake pad bonded shim
IMPORTANT: Ensure ALL excess grease is removed prior to fitting the brake pads
NOTE: Ensure the new shim is seated flat against the brake pad bonded shim
INTERNAL
5) Referring to Figures 7 and 8 - Apply a small dot of grease to the pad abutments and the springs of
each pad
Figure 7
Figure 8
INTERNAL
Wipe the face of the piston to remove any brake dust or dirt
Refit the rear brake pads as per Repair manual Rep.Gr 46 - Rear Brake Pads - To Remove and
Fit, taking care not to dis-lodge the grease/shims before the pads are in position
6) Once the brake pads has been refitted check to confirm the shims have been fitted correctly as
detailed below
For clarity once fitted the brake pads MUST be positioned as shown in Figure 9 (with
reference to Figures 3,4,5 and 6)
Figure 9
7) Carry out a road test to confirm the noise is no longer evident
8) On return to the workshop, visually check and remove any excess grease which may have
come out from between the shims
INTERNAL
Warranty accounting instructions
Scenario 2
Warranty Type 110 or 910
Damage Service Number 46 38
Damage Code
00 20
Time to install shim set
Labour operation code
46 38 42 50
Time
20 TU
4 Brake pads - Rear - Removed and Refitted
Labour Operation Code 46 38 20 50
Time 50 Time units
2 Wheels Removed and Refitted
Labour Operation Code 44 05 20 00
Time 10 Time units
Time to replace the left and right hand rear carriers
Labour operation code
46 15 19 50
Time
10 TU
Frequency diagnosis including road test
Labour Operation Code
Time
47 01 01 00
80 Time units (includes road test 01 21 00 00 - 50 Time units)
For all Warranty accounting instructions please refer to the applicable attached rework instruction
(Scenario 1 or Scenario 2)
Exclusions from Warranty
Warranty claims are excluded in cases where the claim is directly related to the fact that:
• The customer failed to report the defect as soon as it became apparent or did not allow the
required repairs to be carried out as soon as possible
INTERNAL
•
The fault was caused by outside influences, such chemical or vegetation damage, flying
gravel/stones, aggressive cleaning agents, etc
•
The vehicle has been previously repaired without following Bentley Motors repair procedures
•
Parts have been fitted to the vehicles that are not approved by Bentley
Motors
•
The customer has failed to follow the regulations for use of the vehicle
•
The vehicle was overburdened or used for purposes for which it was not intended
(e.g.racing, towing excessive loads, etc.)
•
Natural wear and tear is excluded from the Warranty
Any rework which shows a lack of grease, or poor/incorrect application grease and/or incorrect
application of grease with extensive dirt on callipers or calliper carriers, for these scenarios
warranty payment will not be considered
NOTE: Warranty payments for repeat repairs will not be considered if the grease is deemed to
have not been applied correctly
All authorised Bentley Retailers must guarantee their workmanship for 12 months or12,000 miles
(19,300 kilometres), whichever occurs first
Wear and Tear and Service Items
Items where the lifetime of the component is or can be influenced by driving style and external
factors (Brake pads and brake discs) will only be considered under the terms of the Warranty for
a period of six months or 6,250 miles (10,060 kilometres), whichever occurs first. Beyond that
limit, the defects must be classified as wear and tear and will not be covered by the Warranty
Parts information
Scenario 2
Part number
Description
Quantity
36A 698 147
Service kit (Black)
1
36A 698 147A
Service kit (Red)
1
G 052 560 A2
Vary Bond grease
1 = 1 x 100 gram tube
Refer to ETKA (To be sourced by retailer) Carrier
fixings
4
Refer to ETKA (To be sourced by retailer) Carrier
to Caliper fixings 4
Do not order x1 tube of grease for each individual vehicle as the grease must be used on
multiple vehicles NOTE: x1 tube of grease should be sufficient for up to 15 vehicles
The service kit contains x1 left rear caliper carrier
- x1 right rear caliper carrier
and 4 brake
pad shims with the following part numbers 36A 698 219A (x1) 36A 698 219B (x1) and 36A 698
219 (x2)
Please note: The shims are reusable and can be transferred over to new brake pads when
required
Tip: Before transferring the shims over to new brake pads, the shims must be cleaned and
inspected to confirm there are no issues before fitment
INTERNAL
Scenario 3
Rear brake pad shim and grease application process Vibration of 5 KHz
CAUTION
VERY IMPORTANT: The application of the grease MUST be exactly as shown/detailed ensuring the exact
amount of grease is applied to the locations shown
1) Referring to Figure 1 - Apply 6 dots of grease (< 1.0g in total) to the inside face of the clip on each
shim (x4 in total)
Figure 1
INTERNAL
Referring to Figure 2 - Using a suitable spatula spread the grease to an even layer condition (x4
shims in total)
Figure 2
2) Assemble the clip-on shim onto each pad
3) Once each shim has been assembled to each pad - Squeeze together firmly to remove any excess
grease which comes out from between the new shim and the brake pad bonded shim
IMPORTANT: Ensure ALL excess grease is removed prior to fitting the brake pads
NOTE: Ensure the new shim is seated flat against the brake pad bonded shim
INTERNAL
4) Referring to Figures 3 and 4 - Apply a small dot of grease to the pad abutments and the springs of
each pad
Figure 3
Figure 4
INTERNAL
5) Once the grease and shims have been fitted - Clean the faces of the calliper carrier
where the
brake pads are in contact using a suitable brake cleaner
• Clean off any remaining dirt and brake dust which has accumulated using a suitable brake
cleaner
6) Wipe the face of the piston to remove any brake dust or dirt
7) Refit the rear brake pads as per Rep.Gr 46 - Rear Brake Pads - To Remove and Fit, taking
care not to dis-lodge the grease/shims before the pads are in position
8) Carry out a road test to confirm the noise is no longer evident
9) On return to the workshop, visually check and remove any excess grease which may have
come out from between the shims
Warranty accounting instructions
Scenario 3
Warranty Type 110 or 910
Damage Service Number 46 38
Damage Code
00 20
Time to install shim set
Labour operation code
46 38 42 50
Time
20 TU
4 Brake pads - Rear - Replaced
Labour Operation Code 46 38 20 50
Time 50 Time units
Note: Rear brake pads can be claimed for this Scenario only
2 Wheels Removed and Refitted
Labour Operation Code 44 05 20 00
Time 10 Time units
Frequency diagnosis including road test
Labour Operation Code
Time
47 01 01 00
80 Time units (includes road test 01 21 00 00 - 50 Time units)
Exclusions from Warranty
Warranty claims are excluded in cases where the claim is directly related to the fact that:
• The customer failed to report the defect as soon as it became apparent or did not allow the
required repairs to be carried out as soon as possible
INTERNAL
•
The fault was caused by outside influences, such chemical or vegetation damage, flying
gravel/stones, aggressive cleaning agents, etc
•
The vehicle has been previously repaired without following Bentley
Motors repair procedures
•
Parts have been fitted to the vehicles that are not approved by Bentley
Motors
•
The customer has failed to follow the regulations for use of the vehicle
•
The vehicle was overburdened or used for purposes for which it was not intended
(e.g.racing, towing excessive loads, etc.)
•
Natural wear and tear is excluded from the Warranty
Any rework which shows a lack of grease, or poor/incorrect application grease and/or incorrect
application of grease with extensive dirt on callipers or calliper carriers, for these scenarios
warranty payment will not be considered
NOTE: Warranty payments for repeat repairs will not be considered if the grease is deemed to
have not been applied correctly
All authorised Bentley
Retailers must guarantee their workmanship for 12 months or12,000 miles
(19,300 kilometres), whichever occurs first
Wear and Tear and Service Items
Items where the lifetime of the component is or can be influenced by driving style and external
factors (Brake pads and brake discs) will only be considered under the terms of the Warranty for
a period of six months or 6,250 miles (10,060 kilometres), whichever occurs first. Beyond that
limit, the defects must be classified as wear and tear and will not be covered by the Warranty
Parts information
Scenario 3
Part number
Description
Quantity
36A 698 219
Shim set for rear brake
pads
4 (see Notes below)
G 052 560 A2 Vary Bond grease
1 = 1 x 100 gram
tube
Refer to
ETKA
1
Rear brake pads
Do not order x1 tube of grease for each individual vehicle as the grease must be used on
multiple vehicles NOTE: x1 tube of grease should be sufficient for up to 15 vehicles
Should (x1) of 36A 698 219 be ordered the retailer will receive (x1) therefore the retailer
MUST order x4 shims
The retailer MUST claim for the total amount of shims received
For example: If (x4) shims are ordered, the retailer will receive (4) shims. Therefore, the
retailer must claim for (4)
Please note: The shims are reusable and can be transferred over to new brake pads when
required
INTERNAL
Tip: Before transferring the shims over to new brake pads, the shims must be cleaned and
inspected to confirm there are no issues before fitment
NOTICE: Rear brake pad replacement will be covered under warranty when
conducting Scenario 3 only no other Scenarios are applicable
INTERNAL
- Mixes well with conventional fluids
- Low-moisture formula provides excellent vapor lock...
- Ideal for hydraulic and disc brakes
- Provides an extra margin of safety in extreme braking...
- Mix of polyglycol ethers ensures hot brake-system operation...
- Excellent for ABS, disc and drum brake systems
- Delivers braking power when needed by avoiding a spongy...
- Both wet and dry boiling points exceed the minimum...
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TSB/Document ID: 2071730/3
Replacement Service Bulletin Number:
MFR Communication Date: 2024-07-24
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SERVICE BRAKES
MFR Component System:
MFR Component Subsystem:
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