Software Incompatibility With Active Grille Air Shutter Module B

Where it lives

For U034F, the description names the module as the part involved.

Check these first

• Software in the Active Grille Air Shutter Module B that does not match the rest of the vehicle
• The Active Grille Air Shutter Module B replaced without programming to the vehicle
• Corrupted or outdated calibration in the Active Grille Air Shutter Module B
• A module programming step that did not complete

What to do next

1. Read stored codes on every module and note the mismatched part numbers
2. Record the software and calibration part numbers in the Active Grille Air Shutter Module B
3. Reprogram the Active Grille Air Shutter Module B with the latest calibration for the vehicle
4. Check for a service bulletin that covers the Active Grille Air Shutter Module B software
5. Replace the Active Grille Air Shutter Module B if programming will not complete
6. Clear the code and retest

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