When The Horn Sounds At A Low Volume And The Engine Cannot Be Started - Lexus NX350 2022 Owner's Manual

9-3. If the engine will not start

When the horn sounds at a low volume and the engine cannot be started

Cause
The battery may be discharged.
The battery terminal connections
may be loose or corroded.
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)
596
Remedy
Restarting the engine using the jumper (or
booster) cables.
The battery terminals may be loose or cor-
roded.