T-SB-0079-18

T-SB-0079-18
August 6, 2018
ABS Brake Warning Light On
Service
Category
Brake
Section
Brake Control/Dynamic Control System
Market USA
Applicability
YEAR(S)
MODEL(S)
ADDITIONAL INFORMATION
2010
Prius, Prius PHV
WMI(s): JTD
Plant Code(s): -
Introduction
Some 2010 model year Prius and Prius Plug-in Hybrid vehicles may exhibit a condition where
the brake, ABS, and/or TRAC warning light(s) are on and/or a Check VSC message displays.
Diagnostic Trouble Codes (DTCs) C1391, C1252, C1256, and C1253 may be stored. This
condition may be caused by a small internal brake fluid leak inside the brake booster assembly
with master cylinder. Follow the Repair Procedure in this bulletin to address this condition.
Warranty Information
MODEL
Prius
Prius PHV
OP CODE
DESCRIPTION
TIME
OFP
BR1802
R & R Brake Booster Assembly
With Master Cylinder,
R & R Brake Booster Pump Assembly, and
Reprogram Skid Control ECU
5.8
47050-47140
47050-47150
47070-47060
BR1804
R & R Brake Booster Assembly
With Master Cylinder, and
R & R Brake Booster Pump Assembly
5.2
T1
T2
8A
99
47050-47090
47070-47060
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.
© 2018 Toyota Motor Sales, USA
Page 1 of 4
T-SB-0079-18
August 6, 2018
Page 2 of 4
ABS Brake Warning Light On
Parts Information
PART NUMBER
MODEL
Prius
Prius PHV
PART NAME
QTY
04002-33347
or
04002-33447
Brake Booster Assy W/Master Cylinder
1
47070-47060
04006-22147
Pump Assy, Brake Booster
1
47050-47090
04002-33647
Brake Booster Assy W/Master Cylinder
1
47070-47060
04006-22147
Pump Assy, Brake Booster
1
PREVIOUS
NEW
47050-47140
or
47050-47150
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
PART NUMBER
Techstream 2.0*
QTY
TS2UNIT
Techstream Lite
ADE
TSLITEPDLR01
Techstream Lite (Green Cable)
1
TSLP2DLR01
* Essential SST.
NOTE
 Only ONE of the Techstream units listed above is required.
 Software version 13.10.019 or later is required.
 Additional Techstream units may be ordered by calling Approved Dealer Equipment (ADE)
at 1-800-368-6787.
REQUIRED TOOLS & MATERIAL
FLUID TYPE
QTY
Brake Fluid
DOT3 Brake Fluid
1 – 6 liters
© 2018 Toyota Motor Sales, USA
T-SB-0079-18
August 6, 2018
Page 3 of 4
ABS Brake Warning Light On
Calibration Information
MODEL
Prius
ENGINE
2ZR-FXE
CALIBRATION ID
PREVIOUS
NEW
F152647107
F152647108
F152647109
F152647760
F152647127
F152647128
F152647129
F152647770
F152647340
F152647780
F152647350
F152647790
Repair Procedure
1. Confirm the condition exists.
Are the brake, ABS, and/or TRAC warning light(s) on and/or does a Check VSC
message display?

YES — Continue to step 2.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
2. Using Techstream, check for stored DTCs. Record ANY stored DTCs.
Are ANY of the following DTCs stored: C1391, C1256, C1252, or C1253?

YES — Continue to step 3.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable
Repair Manual.
© 2018 Toyota Motor Sales, USA
T-SB-0079-18
August 6, 2018
Page 4 of 4
ABS Brake Warning Light On
Repair Procedure (continued)
3. Replace the brake booster assembly with master cylinder and the brake booster pump
assembly with NEW parts.
Refer to TIS, applicable model and model year Repair Manual:
 2010 Prius:
Brake – Brake System – “Brake System (Other): Brake Booster:
Removal / Installation”

2010 Prius:
Brake – Brake System – “Brake System (Other): Brake Booster Pump:
Removal / Installation”

2010 Prius PHV:
Brake – Brake System – “Brake System (Other): Brake Booster:
Removal / Installation”

2010 Prius PHV:
Brake – Brake System – “Brake System (Other): Brake Booster Pump:
Removal / Installation”
NOTE
Steps 4 and 5 do NOT apply to the Prius Plug-in Hybrid vehicle. Go to step 6 if the vehicle is a Prius
Plug-in Hybrid.
4. Using Techstream, confirm the calibration ID.
Refer to the Calibration Information chart on page 3.
5. Update the skid control Engine Control Unit (ECU) to the latest calibration ID.
6. Test-drive the vehicle to confirm the repair.
© 2018 Toyota Motor Sales, USA