T-SB-0061-20

T-SB-0061-20
June 16, 2020
Electronic Power Steering (EPS) Light ON With DTC
C05D604
Service
Category
Steering
Section
Steering Gear/Linkage
Market USA
Applicability
YEAR(S)
MODEL(S)
ADDITIONAL INFORMATION
2019 - 2020
RAV4, RAV4 HV
WMI(s): 2T3, 4T3
Introduction
Some 2019 – 2020 model year RAV4 or RAV4 Hybrid vehicles may experience a red or yellow
Electronic Power Steering (EPS) light ON condition with Diagnostic Trouble Code (DTC) C05D604
present when starting the vehicle or while driving. The EPS logic in the EPS gear assembly ECU
has been modified to reduce the possibility of this condition. Follow the Repair Procedure in this
bulletin to address this condition by installing a calibration software update.
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
EL9059
Reprogram the EPS Gear Assembly
0.5
44250 - XXXXX
8C
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.
© 2020 Toyota Motor Sales, USA
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T-SB-0061-20
June 16, 2020
Page 2 of 3
Electronic Power Steering (EPS) Light ON With DTC C05D604
Required Tools & Equipment
REQUIRED EQUIPMENT
SUPPLIER
Techstream ADVi*
PART NUMBER
QTY
TSADVUNIT
Techstream 2.0
TS2UNIT
ADE
Techstream Lite
Techstream Lite (Green Cable)
1
TSLITEPDLR01
TSLP2DLR01
*Essential SST.
NOTE
 Only ONE of the Techstream units listed above is required.
 Software version 15.00.028 or later is required.
 Additional Techstream units may be ordered by calling Approved Dealer
Equipment (ADE) at 1-800-368-6787.
 Use Techstream or an approved J2534 interface to perform flash reprogramming updates.
Visit techinfo.toyota.com for more information regarding J2534 reprogramming.
SPECIAL SERVICE TOOLS (SST)
PART NUMBER
QTY
Battery Diagnostic Tool*
DCA-8000P_T
1
*Essential SST.
NOTE
Additional SSTs may be ordered by calling 1-800-933-8335.
Calibration Information
CALIBRATION ID
MODEL
ENGINE
PREVIOUS
NEW
8965B0R01300/
8965B0R02300
RAV4
A25A-FKS
8965B0R01200
RAV4 HV
A25A-FXS
8965B0R02200
© 2020 Toyota Motor Sales, USA
T-SB-0061-20
June 16, 2020
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Electronic Power Steering (EPS) Light ON With DTC C05D604
Repair Procedure
1. Confirm the condition exists.
Does the vehicle exhibit a red or yellow EPS light ON with DTC C05D604 present?

YES — Continue to step 2.

NO — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
2. Using Techstream, perform a Health Check to confirm if the EPS ECU calibration is up-to-date.
Is the Calibration ID listed the latest EPS ECU calibration?

YES — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.

NO — Continue to step 3.
3. Flash reprogram the EPS ECU.
NOTE
 The battery diagnostic tool MUST be used in Power Supply Mode to maintain battery voltage
at 13.5V while flash reprogramming the vehicle.
 For details on how to use the battery diagnostic tool, refer to the DCA-8000 Instruction Manual
located at TIS – Diagnostics – Tools & Equipment – Battery Diagnostics.
Follow the procedures outlined in Service Bulletin T-SB-0134-16, Techstream ECU Flash Reprogramming
Procedure, and flash the EPS ECU with the NEW calibration file update.
4. AFTER the flash reprogramming is complete, clear ANY DTCs that may be present.
5. Test-drive the vehicle to ensure the condition no longer exists.
© 2020 Toyota Motor Sales, USA