Audible Warnings Description and Operation
Audible warnings alert the driver of a vehicle to a fault or failure in the vehicle operating systems. Audible warnings are also used to reinforce functions performed and information displayed in the multi function display (MFD) of the Instrument Panel Cluster (IPC). The audible warnings are generated by the (IPC) and sound via an internal speaker. The IPC receives requests for audible warnings from various control systems in the vehicle over the GMLAN network. If the IPC receives multiple audible warning requests, the audible warning with the highest priority will sound. The IPC issues audible warnings to reinforce the following conditions:
- A warning indicator or multi function display (MFD) animation is present on the IPC
- A MFD menu selection is made
- Reminder or programmed threshold is confirmed
- A system function check is performed
Each audible warning has a defined frequency, duration, decay and cycle repeat. The following lists the types of audible warnings:
- Overspeed Chime
- Underspeed Chime
- Reminder Chime
- General Warning Chime
- Confirmation Beep Chime
There are two types of audible warning chimes:
- Internal audible warnings which the IPC generates in order to reinforce a certain vehicle condition associated with an IPC indicator or MFD display.
- External Chimes which the IPC generates in response to a requests received via the GMLAN network from other control systems in the vehicle.
The following IPC indicators and MFD displays will generate an audible warning:
- Low fuel
- Very low fuel
- Low oil level
- Low oil pressure
- Low coolant
- Brake fail (low fluid)
- Park brake reminder
- ABS fault
- MIL (malfunction indicator lamp)
- Alternator fault
- Battery saver mode ON
- Reset service reminder
- Airbag fault
- Seat belt reminder (Driver)
- Safety mode active
- Turn Indicator (click-clack sound)
- Hazard (click-clack sound)
- Reduced engine power
- Overspeed warning
- Service vehicle soon
- Engine temperature hot
- Engine immobilised
- Transmission hot - idle engine
- Contact dealer
- Replace battery in remote
- Check engine
- Service reminder
- Front park assist
- Tyre pressure system fault
- Check tyre pressure
- Automatic headlight levelling failed
- Low washer fluid (Caprice only)