MG
Moderator
Please see T-SB-0062-20 Revision 1 (Link Needed)
REVISION NOTICE:
October 14, 2020 Rev1:
The HV Battery Intake Filter Applicability has been updated. Any previous printed versions of this bulletin should be discarded.
Introduction:
Some 2004 – 2020 model year Hybrid vehicles may exhibit an excessive buildup of dust, lint, or debris in the HV battery intake filter or cooling fan. The condition could reduce the efficiency of the HV battery cooling system. Perform the procedures outlined in this bulletin to address this condition.
NOTE:
It is recommended the battery intake filter is inspected for debris, lint, dust, etc., every 5,000 miles. The procedures in this bulletin should be completed every 20,000 miles OR anytime the battery assembly is replaced.
HV Battery Intake Filter Applicability:
The following table is a general guideline for HV battery cooling fan intake filter applicability. Some model and model year vehicles may NOT follow this table. ALWAYS check the vehicle and refer to the appropriate Repair Manual BEFORE beginning service.
Parts Information:
If the HV battery intake filter is damaged or in need of replacement, use the table below as a general guideline.
HV Battery Intake Filter Maintenance and Cleaning:
1. Determine if the vehicle has an HV battery intake filter by using Tables 1 and 2. Does the vehicle have an HV battery intake filter?
YES — Continue to step 2.
NO — Go to the HV Battery Cooling Fan Assembly Maintenance and Cleaning section.
2. The HV battery intake filter may have accumulated dust, lint, and/or debris. Inspect, clean, and determine if the HV battery intake filter requires replacement.
3. Does the HV battery intake filter require replacement?
YES — Continue to step 4.
NO — Go to step 5.
4. Replace the HV battery intake filter.
A. Remove the HV battery intake filter
B. Install the NEW HV battery intake filter.
5. Verify normal vehicle operation. Has the HV battery cooling system efficiency improved?
YES — The procedure is complete. Repeat this cleaning procedure as regular maintenance every 20,000 miles. If applicable, perform a filter inspection every 5,000 miles.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
HV Battery Cooling Fan Assembly Maintenance and Cleaning:
NOTICE:
Do NOT attempt to clean the HV battery cooling fan while it is installed, doing so may cause dust and debris to enter the battery case. Failure to secure the fan blades while cleaning the HV battery cooling fan assembly may result in electronic circuit failure due to overturning.
1. Remove the HV battery cooling fan assembly
2. Using compressed air and/or a vacuum, remove ANY dust, lint, or debris buildup from the HV battery cooling fan blades and air duct.
3. Reinstall the HV battery cooling fan AFTER cleaning it.
4. Has the HV battery cooling system efficiency improved?
YES — The procedure is complete. Repeat this cleaning procedure as regular maintenance every 20,000 miles. If applicable, perform a filter inspection every 5,000 miles.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
REVISION NOTICE:
October 14, 2020 Rev1:
The HV Battery Intake Filter Applicability has been updated. Any previous printed versions of this bulletin should be discarded.
Introduction:
Some 2004 – 2020 model year Hybrid vehicles may exhibit an excessive buildup of dust, lint, or debris in the HV battery intake filter or cooling fan. The condition could reduce the efficiency of the HV battery cooling system. Perform the procedures outlined in this bulletin to address this condition.
NOTE:
It is recommended the battery intake filter is inspected for debris, lint, dust, etc., every 5,000 miles. The procedures in this bulletin should be completed every 20,000 miles OR anytime the battery assembly is replaced.
HV Battery Intake Filter Applicability:
The following table is a general guideline for HV battery cooling fan intake filter applicability. Some model and model year vehicles may NOT follow this table. ALWAYS check the vehicle and refer to the appropriate Repair Manual BEFORE beginning service.
Parts Information:
If the HV battery intake filter is damaged or in need of replacement, use the table below as a general guideline.
HV Battery Intake Filter Maintenance and Cleaning:
1. Determine if the vehicle has an HV battery intake filter by using Tables 1 and 2. Does the vehicle have an HV battery intake filter?
YES — Continue to step 2.
NO — Go to the HV Battery Cooling Fan Assembly Maintenance and Cleaning section.
2. The HV battery intake filter may have accumulated dust, lint, and/or debris. Inspect, clean, and determine if the HV battery intake filter requires replacement.
3. Does the HV battery intake filter require replacement?
YES — Continue to step 4.
NO — Go to step 5.
4. Replace the HV battery intake filter.
A. Remove the HV battery intake filter
B. Install the NEW HV battery intake filter.
5. Verify normal vehicle operation. Has the HV battery cooling system efficiency improved?
YES — The procedure is complete. Repeat this cleaning procedure as regular maintenance every 20,000 miles. If applicable, perform a filter inspection every 5,000 miles.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.
HV Battery Cooling Fan Assembly Maintenance and Cleaning:
NOTICE:
Do NOT attempt to clean the HV battery cooling fan while it is installed, doing so may cause dust and debris to enter the battery case. Failure to secure the fan blades while cleaning the HV battery cooling fan assembly may result in electronic circuit failure due to overturning.
1. Remove the HV battery cooling fan assembly
2. Using compressed air and/or a vacuum, remove ANY dust, lint, or debris buildup from the HV battery cooling fan blades and air duct.
3. Reinstall the HV battery cooling fan AFTER cleaning it.
4. Has the HV battery cooling system efficiency improved?
YES — The procedure is complete. Repeat this cleaning procedure as regular maintenance every 20,000 miles. If applicable, perform a filter inspection every 5,000 miles.
NO — This bulletin does NOT apply. Continue diagnosis using the applicable Repair Manual.