LEMON Manuals: Even more car manuals for everyone
Home >> Ford >> 2021 >> Mustang Mach 1, Automatic Trans >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrumentation, Message Center And Warning Chimes (2 Of 2) >> Diagnosis And Testing >> Instrumentation, Message Center and Warning Chimes >> Symptom Chart(s) >> Symptom Chart: Information And Message Center - Warning Messages

Symptom Chart: Information And Message Center - Warning Messages

Diagnostics in this article assume a certain skill level and knowledge of Ford-specific diagnostic practices. REFER to: Diagnostic Methods .

Symptom Chart 

Condition Possible Sources Actions
The adaptive cruise control messages are never displayed Message center concern
Cruise control indication concern
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the adaptive cruise control RTT. REFER to: Cruise Control .
A BLIS/ CTA message is always displayed Message center concern
BLIS/ CTA indication concern
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the BLIS/ CTA system. REFER to: Blind Spot Information System .
A brake warning (brake fluid level low, parking brake applied or brake system malfunction) message is never or always displayed Message center concern
Brake warning indication concern
NOTE: Disconnecting the GWM creates an unrelated fault to test the overall message center function and display.
With the ignition OFF, DISCONNECT GWM C2431. Place the ignition ON and monitor the message center display.If multiple messages and popup displays do not display, GO to Pinpoint Test A If multiple messages and popup displays do display, DIAGNOSE the brake warning indicator.For never on, GO to Pinpoint Test Q For always on, GO to Pinpoint Test R 
The charging system warning message is never or always displayed Message center concern
Charging system RTT indication concern
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the charging system RTT. GO to Pinpoint Test AM 
The check fuel fill inlet message is always displayed Refer to the Pinpoint Test GO to Pinpoint Test BC 
The convertible top warning message is always displayed Refer to the Pinpoint Test GO to Pinpoint Test BD 
A door, hood or luggage compartment lid ajar warning message is never or always displayed Message center concern
Door ajar RTT indication concern
NOTE: Disconnecting the GWM creates an unrelated fault to test the overall message center function and display.
With the ignition OFF, DISCONNECT GWM C2431. Place the ignition ON and monitor the message center display.If multiple messages and popup displays do not display, GO to Pinpoint Test A If multiple messages and popup displays do display, DIAGNOSE the door ajar RTT. GO to Pinpoint Test AO 
The engine on warning message is always displayed (push button start only) Refer to the Pinpoint Test GO to Pinpoint Test BE 
The engine oil change message is never displayed Message center concern
The PCM has not reached the programmed mileage/time based on the criteria required to display the message.
NOTE: Using the system check in the message center, verify that the oil life is between 1 and 5% for the ENGINE OIL CHANGE SOON message or at 0% for the OIL CHANGE REQUIRED message.
OPEN then CLOSE the driver door and VERIFY the DRIVER DOOR AJAR message functions correctly.If the DRIVER DOOR AJAR message does not function correctly, GO to Pinpoint Test AO If the DRIVER DOOR AJAR message functions correctly with the oil life between 0-5%, INSTALL a new IPC. Refer to Instrument Panel Cluster (IPC) .If the DRIVER DOOR AJAR message functions correctly with the oil life not  at the specified value, INFORM the customer how the message center functions and how the oil life messages are set.
The engine oil change message is always displayed The oil life needs reset RESET the oil life. REFER to the Owner's Literature.
The engine over-temperature warning message is never or always displayed Message center concern
Temperature gauge indication concern.
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the temperature gauge.
For an inoperative gauge, GO to Pinpoint Test J 
For an incorrect gauge, GO to Pinpoint Test K 
The factory mode message is always on Vehicle is in factory or transport mode PLACE the vehicle in normal operation mode. REFER to: Factory Mode Deactivation
A forward collision warning message is never or always displayed Message center concern
Forward collision system concern.
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the forward collision warning system. REFER to: Collision Warning and Collision Avoidance System .
A gas particulate filter warning message is always displayed Exhaust particulate filter concern
Powertrain emissions concern
Message center concern
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE all PCM gas particulate filter Diagnostic Trouble Codes (DTCs). Refer to Engine Controls - Introduction (Except Diesel & Hybrid) .
The hill start assist warning message is always displayed Refer to the Pinpoint Test GO to Pinpoint Test BF 
The lane keeping alert system warning message (keep hands on wheel) is never or always displayed Message center concern
Lane keeping alert warning chime concern
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the lane keeping alert warning chime. GO to Pinpoint Test BP 
The lane keeping system malfunction or front camera malufunction fault message is always displayed Message center concern
Lane keeping system concern
DIAGNOSE the lane keeping aid system. REFER to: Lane Keeping System
The launch control message is never displayed Message center concern
Launch control indication concern.
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the launch control RTT. GO to Pinpoint Test AS 
A load shed message is always displayed Message center concern
Battery charging system concern.
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the charging system. REFER to the appropriate Battery and Charging System article.
The low oil pressure warning message is never or always displayed Message center concern
Low oil pressure indication concern.
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE low oil pressure RTT.
For 2.3L and 5.0L [non-performance package], GO to Pinpoint Test AU 
For 2.3L and 5.0L [performance package] and 5.2L, GO to Pinpoint Test AV 
A memory seat message is never displayed Message center concern
Memory seat concern.
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE memory seats.
The parking aid malfunction message is always displayed Message center concern
Parking aid system concern
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the parking aid. REFER to: Parking Aid .
A PATS message (no key detected, key inside vehicle, key not inside vehicle or place key in keyholder) is never or always displayed (push button start only) PATS concern DIAGNOSE the PATS. REFER to: Passive Anti-Theft System (PATS)
The perimeter alarm message is always displayed Message center concern
Perimeter alarm concern
NOTE: Disconnecting the GWM creates an unrelated fault to test the overall message center function and display.
With the ignition OFF, DISCONNECT GWM C2431. Place the ignition ON and monitor the message center display.If multiple messages and popup displays do not display, GO to Pinpoint Test A If multiple messages and popup displays do display, DIAGNOSE the perimeter alarm. REFER to: Perimeter Anti-Theft Alarm .
The power reduced to lower engine temperature warning message is always displayed Refer to the Pinpoint Test DIAGNOSE the engine over-temperature RTT warning indicator. GO to Pinpoint Test AQ 
The PRNDL not in park warning message is never or always displayed Message center concern
PRNDL indication concern
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the PRNDL. GO to Pinpoint Test X 
The rear seatbelt monitor message is never or always on Message center concern
Seatbelt buckle concern
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE seatbelt related RCM Diagnostic Trouble Codes (DTCs). REFER to: Airbag Supplemental Restraint System (SRS) .
The shift to park display is never or always on Refer to the Pinpoint Test OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the PRNDL. GO to Pinpoint Test X 
The service AdvanceTrac® malfunction warning is never or always displayed Message center concern
Stability-traction control indication concern
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the stability-traction control indicator. GO to Pinpoint Test AA 
A steering malfunction message is always on Message center concern
EPAS system concern
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the EPAS. REFER to: Power Steering .
A TPMS malfunction message is never or always on Message center concern
TPMS warning indication concern
NOTE: Disconnecting the GWM creates an unrelated fault to test the overall message center function and display.
With the ignition OFF, DISCONNECT GWM C2431. Place the ignition ON and monitor the message center display.If multiple messages and popup displays do not display, GO to Pinpoint Test A If multiple messages and popup displays do display, DIAGNOSE the TPMS. REFER to: Tire Pressure Monitoring System (TPMS) .
The tire training complete message is never on TPMS sensor training incomplete
NOTE: This message only appears at the conclusion of the TPMS sensor training procedure.
CARRY OUT the TPMS sensor training. REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration .
A tire training message (train left front, right front, left rear or right rear tire) message is never on TPMS warning indicator concern
TPMS sensor training concern
NOTE: These messages only appear during the TPMS sensor training procedure.
VERIFY the TPMS warning indicator functions.If the TPMS warning indicator does not operate, GO to Pinpoint Test AC If the Tire TPMS warning indicator operates, CARRY OUT the TPMS sensor training. REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration .
The tires not trained message is always on TPMS sensor training concern
NOTE: This message only appears during the TPMS sensor training procedure.
CARRY OUT the TPMS sensor training. REFER to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration
The traction control disabled warning is never on Message center concern
Stability-traction control disable indication concern
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the traction control disabled indicator (sliding car OFF icon). GO to Pinpoint Test AB 
The transport mode message is always on Vehicle is in transport mode PLACE the vehicle in normal operation mode. REFER to: Transport Mode Deactivation
A vehicle starting/ignition status (press brake to start or switch ignition off press power) message is always on Message center concern
Push button start concern
OPEN then CLOSE the driver door and VERIFY the driver door ajar message displays correctly with the door open and closed.
If the driver door ajar message does not function correctly, GO to Pinpoint Test AO 
If the driver door ajar message functions correctly, DIAGNOSE the ignition/starting system concern. REFER to: Steering Wheel and Column Electrical Components .