How do I use Vehicle Diagnostics?
If Hum sends a Vehicle Diagnostics alert, it is typically accompanied by a
description of the applicable Diagnostic Trouble Code (DTC) to help you
understand what the problem may be. If you choose to take your car to a
mechanic, you can tell them about the alert and provide more information
than just “the check engine light is on.” Hum is constantly adding new DTCs
to its extensive database to make sure its analytics are as comprehensive
Additionally, as a Hum subscriber, you can call the Mechanics Hotline for
advice from an ASE-certified mechanic. Press the blue customer service
button on the Hum Speaker or call (800) 711-5800 and
ask to be connected to the Mechanics Hotline.
Will Hum detect all the issues my car can have?
Unfortunately, no. Hum can detect many issues that are identifiable
through your car’s OBD (On-Board Diagnostics) system only. Some examples
of issues that are not identifiable through your car’s OBD system include:
low windshield wiper fluid, low tire pressure, and headlights or
If you suspect something may be wrong, but haven’t received an alert from
Hum, you can call the Mechanics Hotline for advice from an ASE-certified
mechanic. Press the blue customer service button on the Hum Speaker or
call (800) 711-5800 and ask to be connected to the
How can Hum help with my routine maintenance and service?
Hum can help you stay on top of vehicle maintenance in a number of ways:
- You can set maintenance reminders to help you remember when routine
services such as tire rotations and oil changes are due
- You can access live advice from ASE-certified mechanics through the Hum
- You can add maintenance reminders based on the service schedule that
your car manufacturer suggests