For vehicles equipped with the Accessory Tow Brake Controller (P/N: C9N1V7782A), the 12V battery may...

Bulletin number

09-030-26

Component

Electrical system

Summary

For vehicles equipped with the Accessory Tow Brake Controller (P/N: C9N1V7782A), the 12V battery may become discharged due to high parasitic current if the vehicle is left unused for an extended period, regardless of whether a trailer is connected or not. This may be caused by power supply to the controller continuing after the ignition is turned OFF due to inadequate software in the Tow Brake Controller. 5. Replace the accessory with the improved part (suffix "B"), and verify that the parasitic current is 65 mA or less. NOTE: For accessory installation procedures, refer to INSTALLATION INSTRUCTIONS in attached.

Owners of these vehicles have filed 97 complaints in the electrical category.