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Home >> Ford >> 2024 >> F-150 Lightning Flash >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrumentation, Message Center And Warning Chimes (Description & Operation) >> Description And Operation >> Instrument Panel Cluster (IPC) - Electric - System Operation and Component Description >> Reconfigurable Telltales (RTTs)

Reconfigurable Telltales (RTTs)

NOTE: It is important to view each of the cluster options in the Overview to identify which IPC uses specific fixed location indicators.

Refer to: Instrument Panel Cluster (IPC) - Electric - Overview .

Prove-Out 

The IPC carries out a display prove-out to verify the gauges function and all module controlled warning indicator lamps and monitored systems are functioning correctly within the IPC. Upon initiation of the prove-out, the gauges sweep from one stop to the other then return to the normal indication state based on the input received. The IPC also provides a timed prove-out of some indicators while other indicators illuminate upon engine start up or have no prove-out.

ABS Warning 

If a fault condition exists in the ABS, the ABS module sends the ABS warning indicator request message to either flash or illuminate the ABS indicator or RTT warning indicator.

Refer to ABS /Brake/Stability-Traction Control System Indication description for information on the conditions when the ABS warning indicator is turned on.

ABS /Brake/Stability-Traction Control System Indication 

The brake/stability-traction control system indication is controlled almost entirely by the ABS module. The ABS module can illuminate multiple indicators for various fault conditions. The following table provides a summary of the basic fault conditions and the indicators that are illuminated for each condition.

NOTE: Refer to the Normal Operation and Fault Condition description before each brake/stability-traction control system indicator Pinpoint Test for the IPC default action for network/missing message conditions.
Event/Fault Condition ABS Indicator Status Brake Warning Indicator Status Electric Park Brake Indicator Status (Red) Electric Park Brake Fault Indicator Status (Yellow) Stability-Traction Control Indicator Status Traction Control Disabled Indicator Status
Normal conditions Off Off Off Off Off Off
Parking brake applied Off Flashing while applying
On when applied
Off Off Off Off
Low brake fluid level or brake fluid level input concern Off On Off Off Off Off
Stability-traction control event - trailer sway Off Off Off Off Flashing Off
Stability-traction control event - brake applied Off Off Off Off Flashing Off
Stability-traction control disabled by driver Off Off Off Off Off On
Single wheel speed sensor fault On Off Off Off On Off
2 wheel speed sensor faults on the same axle or 3 wheel speed sensor faults On On Off On On Off
ABS module fault On On Off Off On Off
Park brake malfunction Off On Flashing On Off Off
ABS disabled On On Off Off On Off
All functions disabled On On On On On Off
Steering wheel angle sensor center not found Off Off Off Off On Off
ABS to CAN total failure 4x2: On
4x4: On
On Off On On Off
Electric park brake switch fault Off Off Flashing On Off Off
Configuration mismatch Off Off Off Off On Off
VIN mismatch Off Off Off Off On Off
ACC and ABS both active Off Off Off Off Flashing Off

Adaptive Cruise Control/Cruise Control 

The IPC provides a cruise control RTT indicator when the adaptive cruise control system is active or in standby mode.

Airbag Warning 

The IPC provides the airbag warning indicator or RTT warning indicator if a SRS concern is detected. If a fault is detected in the airbag circuit, the RCM sets a DTC and the IPC illuminates the airbag warning indicator or RTT warning indicator.

Auto High Beam 

The IPC provides the auto high beam RTT indicator to indicate the auto high beam is active.

Auto Hold 

The IPC provides the auto hold RTT indicator to indicate the state of the auto hold feature. The auto hold feature holds a vehicle stationary once it has come to a stop using the brakes, allowing the driver to remove his or her foot from the brake pedal.

Blind Spot Monitoring System (BLIS®) Off 

The IPC provides a BLIS off RTT indicator to inform the driver the BLIS is turned off.

Brake Warning 

The brake warning indicator or RTT indicator informs the driver the brake fluid level is low, there is a failure in the base brake system or the parking brake is applied. The IPC uses messaged inputs to control the brake RTT warning indicator.

Refer to ABS /Brake/Stability-Traction Control System Indication description for information on the conditions when the brake warning indicator is turned on.

Charge Warning (12-Volt Battery) 

The IPC provides a charging system RTT indicator along with message displays indicating the charging system status. When a fault is present in the charging system, the BCM sends the battery low state of charge message to the IPC to display message center warning messages and the charging system RTT indicator.

Door Ajar, Hood Ajar Or Tailgate Ajar Warning 

The IPC provides a door ajar warning indicator along with message displays to indicate the status of the doors, hood and tailgate. The BCM monitors each of the ajar inputs and sends the specific door ajar status message to the IPC to display the ajar warning indicator and corresponding warning message.

Drive Mode - Sport, Off Road, Tow Haul, 

The IPC provides a drive mode RTT indicator when a specific drive mode is selected. The indicator displays each drive mode in text form.

ELD Indicator 

The ELD indicator informs the driver the locking differential is engaged.

Electric Motor Temperature 

The IPC provides a RTT warning indicator to alert the driver the electric motor temperature is too high or too low, which can affect vehicle performance.

Electric Park Brake 

The electric park brake indicator or RTT indicator illuminates when a fault in the electric park brake system is detected.

Forward Collision System 

The IPC provides a RTT warning indicator to alert the driver the forward collision warning system is unavailable or a fault is detected, disabling the system.

The forward collision (pre-collision assist) warning RTT indicator can illuminate if the forward collision assist system is degraded due to environmental conditions that reduce camera vision function, such as direct or low light, ice on the windshield, heavy rain or fog. The RTT indicator can also illuminate when the driver turns the pre-collision assist or electronic stability control system off while in drive mode. This is part of normal system operation.

Four Wheel Drive System 

The IPC provides a RTT indicator for each 4WD position selected: 2H, 4H, 4L, 4A.

Hazard (Stop Safely Now) 

The IPC provides a hazard RTT indicator to inform the driver that a vehicle hazard may exist and a powertrain shutdown may be imminent or may have already occurred.

High Beam 

The high beam RTT indicator informs the driver the high beams are on.

High Voltage Battery (Charge) 

The IPC provides a high voltage battery RTT indicator that indicates the high voltage battery charge status. The high voltage battery RTT indicator changes color to indicate charge status: blue for a normal charge condition, amber for low state of charge, and red for depleted battery charge.

High Voltage Battery Temperature 

The IPC provides a high voltage battery temperature RTT indicator to indicate the high voltage battery temperature is out of normal range. Battery temperature that is too hot or too cold can affect vehicle performance.

Lane Centering Aid 

The IPC provides the lane centering aid on RTT indicator to indicate the lane centering aid has been turned on, is active or in standby mode. The RTT indicator changes colors to indicate system status.

Lane Keeping System 

The IPC provides the lane keeping system on RTT indicator to indicate the lane keeping system has been turned on, is active or in standby mode. The RTT indicator changes colors to indicate system status.

Lights On 

When the parking lamps are turned on, the BCM sends the park lamp status to the IPC to illuminate the lights on indicator or RTT indicator.

Low Washer Fluid Level 

The low washer fluid level switch is hardwired to the IPC through a single signal circuit and is grounded through a separate ground circuit. The IPC provides a reference voltage to the washer fluid level switch. When the washer fluid is low, the washer fluid level switch closes, pulling the reference voltage low, and the IPC illuminates the low washer fluid level RTT indicator.

One-Pedal Drive Control 

The IPC provides the one-pedal drive control RTT indicator to indicate the system is engaged. The one-pedal drive feature allows the driver to control the vehicle acceleration and braking with one pedal.

Powertrain Malfunction (Wrench) Warning 

The IPC provides a powertrain malfunction (wrench) RTT warning indicator to indicate a:

Ready to Drive 

The ready to drive RTT indicator informs the driver the motor is on and the vehicle is ready to be driven.

Reverse Braking Assist 

The IPC provides a reverse braking assist RTT indicator to indicate the reverse braking system is activated. The reverse braking system uses the gear lever position and data from the BLIS modules and rear parking aid sensors to detect an object behind the vehicle when the vehicle is shifted into R. The reverse braking RTT indicator illuminates when the system applies the brakes.

Seatbelts/Belt-Minder 

The RCM monitors the driver and front passenger seatbelt positions through the seatbelt buckle switch. The RCM provides the driver and passenger seatbelt buckle status to the IPC to turn on or turn off the seatbelt warning indicator or RTT indicator.

Stability-Traction Control (Sliding Car Icon) 

The stability-traction control (sliding car icon) indicator or RTT indicator informs the driver of the current status of the stability and traction control systems. The stability-traction control indicator illuminates when a fault condition exists or when an active traction control or stability control event is occuring.

Refer to ABS /Brake/Stability-Traction Control System Indication description for information on the conditions when the stability-traction control indicator (sliding car icon) is turned on.

Traction Control Disabled (Sliding Car OFF Icon) 

The stability-traction control is configured on/off from the console mounted switch. When the driver enables or disables the stability-traction control system, the ABS module sends the traction control off indicator request message to the IPC to illuminate or turn off the stability-traction control disabled (sliding car OFF icon) indicator or RTT indicator based upon the system state.

Refer to ABS /Brake/Stability-Traction Control System Indication description for information on the conditions when the stability-traction control disabled indicator (sliding car OFF icon) is turned on.

TPMS Warning 

If the BCM determines the tire pressure has exceeded the low tire pressure limits, the tire pressure warning indicator request message is sent to the IPC to illuminate the TPMS warning indicator or RTT warning indicator.

If a TPMS monitor or sensor fault condition exists, the BCM sends the tire pressure warning indicator request message to the IPC to flash the TPMSRTT warning indicator. The IPC flashes the TPMSRTT warning indicator for 75 seconds then turns the indicator on solid.

Turn Signal/Hazard 

When the multifunction switch is in the LH or RH turn position or if the hazard switch is on, the BCM sends the left or right turn lamp on request to the IPC to flash the turn signal indicator or RTT indicator on and off.

Vehicle Plugged In 

The IPC provides a vehicle plugged in RTT indicator that illuminates when the vehicle is plugged into a charging source.