T-SB-0098-13

August 12, 2013
T-SB-0098-13
HV Battery Cooling Fan Maintenance for Severe Usage
Vehicles
Service
Category
Engine/Hybrid System
Section
Hybrid/Battery Control System
USA
Market
Applicability
YEAR(S)
MODEL(S)
2004 – 2009
Prius
ADDITIONAL INFORMATION
Introduction
For vehicles that are used under certain severe operating conditions, the HV Battery Cooling Fan
may experience an excessive buildup of dust, lint, or other debris that can reduce the efficiency of
the HV Battery Cooling System. HV Battery Cooling Fan maintenance and cleaning should be
performed to address this condition.
NOTE
The following procedure should be completed every 25,000 miles OR any time the HV Battery
Assembly is replaced.
Warranty Information
OP CODE
DESCRIPTION
TIME
OFP
T1
T2
N/A
Not Applicable to Warranty
–
–
–
–
Repair Procedure
1. Is the vehicle subject to all of the operating conditions detailed below?
(1) The vehicle is used for over 15 hours per day.
(2) The vehicle is used over 6 days per week.
(3) The right rear seat is used over 50 times per day.
YES — Go to step 2.
NO — This bulletin does NOT apply.
© 2013 Toyota Motor Sales, USA
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August 12, 2013
T-SB-0098-13
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HV Battery Cooling Fan Maintenance for Severe Usage Vehicles
Repair Procedure (Continued)
2. Remove the HV Battery Cooling Fan Assembly.
Refer to the Technical Information System (TIS), applicable model year Prius Repair Manual:
• 2004 / 2005 / 2006 / 2007 / 2008 / 2009 Prius:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid/Battery Control: Battery
Blower: Removal”
3. Using compressed air, clean any dust, lint, or debris buildup from the HV Battery Cooling Fan
blades. At this time, secure the fan blades to prevent turning while cleaning.
Figure 1. HV Battery Cooling Fan BEFORE Cleaning
Figure 2. HV Battery Cooling Fan AFTER Cleaning
NOTICE
• Do NOT attempt to clean the HV Battery Cooling Fan while it is installed in the vehicle.
Doing so may cause dust or debris to enter the HV Battery Case.
• Failure to secure the fan blades while cleaning can result in electronic circuit failure due
to overturning.
4. Re-install the HV Battery Cooling Fan Assembly and verify normal operation.
Refer to TIS, applicable model year Prius Repair Manual:
• 2004 / 2005 / 2006 / 2007 / 2008 / 2009 Prius:
Engine/Hybrid System – Hybrid/Battery Control System – “Hybrid/Battery Control: Battery
Blower: Installation”
5. Repeat this procedure as normal maintenance every 25,000 miles.
© 2013 Toyota Motor Sales, USA