T-SB-0007-20

T-SB-0007-20
January 23, 2020
Rear Brake Squeal/Squeak Noise
Service
Category
Brake
Section
Brake (rear)
Market USA
Applicability
YEAR(S)
MODEL(S)
ADDITIONAL INFORMATION
2020
Yaris HB MEX-Prod
VDS(s): DLBJV
2016 - 2020
Yaris SD MEX-Prod
VDS(s): DLBYV
2017 - 2018
iA
VDS(s): DLBYV, DLBZV
Introduction
Some 2017 – 2018 model year iA, 2016 – 2020 Yaris Sedan Mexico-produced, and 2020 Yaris
Hatchback Mexico-produced vehicles may exhibit a squeal/squeak noise from the rear during
brake application. The cause of this condition is an insufficient amount of grease on the mounting
points and backing plates of the rear brake assemblies. Follow the Repair Procedure in this
bulletin to address this condition.
Production Change Information
This bulletin applies to vehicles produced BEFORE the Production Change Effective VINs
shown below.
MODEL
PLANT
PRODUCTION CHANGE EFFECTIVE VIN
Yaris HB MEX-Prod
MMVO
3MYDLBJV#LY700006
Yaris SD MEX-Prod
MMVO
3MYDLBYV#LY700007
© 2020 Toyota Motor Sales, USA
Page 1 of 4
T-SB-0007-20
January 23, 2020
Page 2 of 4
Rear Brake Squeal/Squeak Noise
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
BR1912
Clean and Lube Rear Brake Contact Points
0.9
47043-WB001
36
99
APPLICABLE WARRANTY
 This repair is covered under the Toyota Basic Warranty. This warranty is in effect for
36 months or 36,000 miles, whichever occurs first, from the vehicle’s in-service date.
 Warranty application is limited to occurrence of the specified condition described in
this bulletin.
Parts Information
PART NUMBER
PREVIOUS
NEW
N/A
90118-WBB69
PART NAME
QTY
Grease Packet
2 (One Per Side)
Repair Procedure
1. Confirm the condition exists.
Does the vehicle exhibit a squeal/squeak noise from the rear during braking application?

YES — Continue to step 2.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Remove the rear brake drum and shoe assemblies.
Refer to TIS, applicable model and model year Repair Manual:

2017 – 2018 iA:
Brake – Brake (Rear) – “Brake (Rear): Rear Brake: Removal”

2020 Yaris HB MEX-Prod:
Brake – Brake (Rear) – “Brake (Rear): Rear Brake: Removal”

2016 – 2020 Yaris SD MEX-Prod:
Brake – Brake (Rear) – “Brake (Rear): Rear Brake: Removal”
© 2020 Toyota Motor Sales, USA
T-SB-0007-20
January 23, 2020
Page 3 of 4
Rear Brake Squeal/Squeak Noise
Repair Procedure (continued)
3. Using the figures below, confirm a sufficient amount of grease is present on the rear
brake assemblies.
Figure 1. Ledge Surfaces
1
2
3
1
Lack of Grease (Not OK)
3
2
Proper Amount of Grease (OK)
Excess of Grease (Not OK)
Figure 2. Anchor Part
1
2
1
Lack of Grease (Not OK)
2
Proper Amount of Grease (OK)
3
3
Excess of Grease (Not OK)
Is a sufficient amount of grease present on the rear brake assemblies?

YES — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.

NO — Continue to step 4.
© 2020 Toyota Motor Sales, USA
T-SB-0007-20
January 23, 2020
Page 4 of 4
Rear Brake Squeal/Squeak Noise
Repair Procedure (continued)
4. Apply grease to the three ledge surfaces
of the backing plate while lifting the
brake shoe.
Figure 3.
NOTE
Grease application can be easily performed
with a cotton swab.
5. Apply grease on the bottom side of the
brake shoe anchor points.
Figure 4.
6. Reinstall the rear brake shoes and drum assemblies.
Refer to TIS, applicable model and model year Repair Manual:

2017 – 2018 iA:
Brake – Brake (Rear) – “Brake (Rear): Rear Brake: Installation”

2020 Yaris HB MEX-Prod:
Brake – Brake (Rear) – “Brake (Rear): Rear Brake: Installation”

2016 – 2020 Yaris SD MEX-Prod:
Brake – Brake (Rear) – “Brake (Rear): Rear Brake: Installation”
7. Test-drive the vehicle to confirm proper brake operation and that the condition is no
longer present.
© 2020 Toyota Motor Sales, USA