Lexus NX350 2022 - When the Horn Sounds at a Low Volume and the Engine Cannot be Started

When the horn sounds at a low volume and the engine cannot be started
Cause Remedy
The battery may be discharged.
Restarting the engine using the jumper (or
booster) cables.
The battery terminal connections
may be loose or corroded.
The battery terminals may be loose or cor-
roded.
Related Links
If the vehicle battery is discharged(P. 589)
Restarting the engine when the battery is discharged(P. 630)
If the vehicle battery is discharged(P. 589)
9-3. If the engine will not start
596