NHTSA ID Number: 10181082
Manufacturer Communication Number: B19-053
TSB/Document Date: 2020-10-14
Summary
Service Bulletin - The front and/or rear brakes make a high-pitched squeal when lightly applied at 15 mph or less.
Service Bulletin
19-053
October 2, 2020
Version 6
Front and/or Rear Brakes Squeal When Applied at Low Speeds
Supersedes 19-053, dated June 19, 2020, see REVISION SUMMARY
AFFECTED VEHICLES
Year
Model
Trim Level
VIN Range
2019
RDX
ALL
ALL
2WD
5J8TC1...LL000001 thru 5J8TC1...LL002519
AWD
5J8TC2...LL000001 thru 5J8TC2...LL004864
2WD
5J8TC1...LL002520 or later
AWD
5J8TC2...LL004865 or later
2020
Group
Group A
RDX
Group B
REVISION SUMMARY
This bulletin has been extensively revised. American Honda
recommends reviewing the entire bulletin.
SYMPTOM
The front and/or rear brakes make a high-pitched squeal when lightly applied at 15 mph or less.
NOTE
The front brakes stop squealing when they are warmed up.
PROBABLE CAUSE
•
Front Brakes: The brake discs are too stiff.
•
Rear Brakes: There is not enough dampening between the rear brake pads and shims.
CLIENT INFORMATION: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not assume
this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact an
authorized Acura automobile dealer.
©
2020 American Honda Motor Co., Inc. — All Rights Reserved
Page 1 of 6
CORRECTIVE ACTION
•
•
Squeal from the front brakes:
-
Group A - Replace the front brake discs and pads.
-
Group B - Replace the front brake pads.
Squeal from the rear brakes:
-
•
Group A & B - Replace the rear brake pads.
Squeal from both front and rear brakes:
-
Group A - Replace the front brake discs, front brake pads, and rear brake pads.
-
Group B - Replace the front and rear brake pads.
PARTS INFORMATION
Part Name
Part Number
Quantity
Front Brake Disc
45251-TJB-A02
2
Front Brake Pad Set (includes M-77 assembly paste)
45022-TJB-A02
1
Rear Brake Pad Set (includes ATE Plastilube paste)
43022-TJB-A03
1
Part Name
Part Number
Quantity
Brake Caliper Piston Compressor
07AAE-SEPA101
1
TOOL INFORMATION
WARRANTY CLAIM INFORMATION
The normal warranty applies.
Squeal from the Front Brakes
Operation
Number
Description
Flat Rate
Time
410101
Group A - Replace the
front brake discs.
E
Replace the front brake
pads.
0.2 hr
410150
Group B - Replace the
front brake pads.
Defect
Code
Symptom
Template ID
Code
Failed Part Number
0.6 hr
03214
04201
B29053A
45251-TJB-A02
0.6 hr
03214
04201
B29053B
45251-TJB-A02
Flat Rate
Time
Defect
Code
0.7 hr
03214
Squeal from the Rear Brakes
Operation
Number
411150
Description
Group A & B - Replace
the rear brake pads.
Symptom
Template ID
Code
04201
B29053C
Failed Part Number
43022-TJB-A02
Page 2 of 6
Squeal from the Front and Rear Brakes
Operation
Number
Description
Flat Rate
Time
410101
Group A - Replace the
front brake discs.
0.6 hr
E
Replace the front brake
pads.
0.2 hr
G
Replace the rear brake
pads.
0.5 hr
410150
Group B - Replace the
front brake pads.
0.6 hr
411150
Replace the rear brake
pads.
Defect
Code
Symptom
Template ID
Code
Failed Part Number
03214
04201
B29053D
43022-TJB-A02
03214
04201
B29053E
43022-TJB-A02
0.7 hr
Skill Level: Repair Technician
Page 3 of 6
INSPECTION PROCEDURE
NOTE
Based on your inspection, you may have to repair both the front and rear brakes.
Squeal from the Front Brakes
Check if you hear a high-pitch squeal with light brake application at 15 mph or less, and the ambient temperature is
below 50°F. The squeal should go away when the brakes are warmed up after several stops.
If the front brakes are squealing, go to AFFECTED VEHICLES to see which group the vehicle is in.
-
Group A - Go to REPAIR PROCEDURE GROUP A to replace the front brake discs and pads only.
-
Group B - Go to REPAIR PROCEDURE GROUP B to replace the front brake pads only.
If the high-pitched squeal does not meet the described symptoms, this bulletin does not apply. Continue with
normal system troubleshooting.
Squeal from the Rear Brakes
Check if you hear a high-pitch squeal with light brake application at 15 mph or less, and the ambient temperature is
below 50°F. The squeal should not go away when the brakes are warmed up after several stops.
If the rear brakes are squealing, go to AFFECTED VEHICLES to see which group the vehicle is in.
-
Group A - Go to REPAIR PROCEDURE GROUP A to replace the rear pads only.
-
Group B - Go to REPAIR PROCEDURE GROUP B to replace the rear pads only.
If the high-pitched squeal does not meet the described symptoms, this bulletin does not apply. Continue with
normal system troubleshooting.
Page 4 of 6
REPAIR PROCEDURE GROUP A
Front Brake Disc and Pad Replacement
NOTES
Based on your inspection, you may have to repair both the front and rear brakes.
The 2019-20 RDX is equipped with FNC brake discs. These brake discs cannot be machined or refinished.
1. Replace the front brake discs and pads. Refer to the service information.
NOTE
Make sure to apply the M-77 assembly paste included in the front brake pad set.
2. Make sure the brakes are cooled down, then test-drive the vehicle multiple times to make sure the squeal is gone. If
the brakes still squeal, check the inspection procedure to see if the rear brake squeal symptoms apply.
Rear Brake Pad Replacement
1. Do the electric parking brake disengagement procedure, and replace the rear brake pads. Refer to the service
information.
NOTES
The 2019-20 RDX is equipped with FNC brake discs. These brake discs cannot be machined or refinished.
Make sure to apply the ATE Plastilube paste included in the rear brake pad set.
2. Let the brakes cool down to ambient temperature, then test-drive the vehicle multiple times to make sure the squeal
is gone. If the brakes still squeal, check the inspection procedure to see if the front brake squeal symptoms apply.
Page 5 of 6
REPAIR PROCEDURE GROUP B
Front Pad Replacement
NOTES
The 2019-20 RDX is equipped with FNC brake discs. These brake discs cannot be machined or refinished.
Based on your inspection, you may have to repair both the front and rear brakes.
1. Replace the front brake pads. Refer to the service information.
NOTE
Make sure to apply the M-77 assembly paste included in the front brake pad set.
2. Make sure the brakes are cooled down, then test-drive the vehicle multiple times to make sure the squeal is gone. If
the brakes still squeal, check the inspection procedure to see if the rear brake squeal symptoms apply.
Rear Brake Pad Replacement
1. Do the electric parking brake disengagement procedure, and replace the rear brake pads. Refer to the service
information.
NOTES
•
The 2019-20 RDX is equipped with FNC brake discs. These brake discs cannot be machined or refinished.
•
Make sure to apply the ATE Plastilube paste included in the rear brake pad set.
2. Let the brakes cool down to ambient temperature, then test-drive the vehicle multiple times to make sure the squeal
is gone. If the brakes still squeal, check the inspection procedure to see if the front brake squeal symptoms apply.
END
Page 6 of 6
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TSB/Document ID: B19-053
Replacement Service Bulletin Number:
MFR Communication Date: 2020-10-02
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: SERVICE BRAKES, HYDRAULIC
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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