12-volt battery drain due to the passive entry feature of the Digital Key 2 premium causing repeated...

Bulletin number

26-BE-025H TSB

Component

Electrical system

Summary

Some Tucson (NX4, NX4A, NX4M), Tucson Hybrid (NX4 HEV), and Tucson Plug-In Hybrid (NX4 PHEV) vehicles may exhibit a 12-volt battery drain due to the passive entry feature of the Digital Key 2 premium causing repeated wakeup of the vehicle. This bulletin provides instructions to perform software updates for the Ultra-Wide Band (UWB) and Body Domain Control (BDC) modules.

Owners of these vehicles have filed 149 complaints in the electrical category.