Symptom Chart

WARNING: This page is about a different car, the 2007 Lincoln Mark LT and 2007 Ford Pickup. However, it is still accessible from the selected car via links, so may be relevant.

Symptom Chart

Condition	Possible Sources	Action
No communication with the vehicle security module (VSM)	Fuse(s) Circuitry VSM	REFER to MODULE COMMUNICATIONS NETWORK article.
A single/more than one door lock is inoperative	Circuitry Door lock actuator VSM	Go to Pinpoint Test A .
All door locks are inoperative	Fuse Circuitry Door lock actuator VSM	Go to Pinpoint Test B .
All door locks are inoperative from one switch	Circuitry Door lock control switch VSM	Go to Pinpoint Test C .
Panic feature is inoperative/does not operate correctly	Circuitry Remote keyless entry (RKE) transmitter VSM	Go to Pinpoint Test D .
The autolock does not operate correctly	Circuitry Door ajar switches Universal asynchronous receiver-transmitter (UART)-based protocol (UBP) network VSM	Go to Pinpoint Test E .
The door locks operate only one way	Circuitry Door lock control switch VSM	Go to Pinpoint Test F .
The doors do not lock/unlock using the keyless entry keypad	Circuitry Keyless entry keypad VSM	Go to Pinpoint Test G .
The doors do not lock/unlock using the remote keyless entry (RKE) transmitter	RKE battery RKE transmitter RKE transmitter programming Aftermarket systems High power devices TV/radio transmission towers VSM	Go to Pinpoint Test H .
The power door unlock inhibit feature is inoperative	Feature not enabled VSM	ENABLE the power door unlock inhibit feature. INSTALL a new VSM. REFER to MULTIFUNCTION ELECTRONIC MODULES article.
The keyless entry keypad illumination is inoperative	Circuitry Keyless entry keypad VSM	Go to Pinpoint Test I .
The remote keyless entry (RKE) transmitter has poor range performance	TPMS/RKE antenna (early build) Aftermarket system High power devices TV/radio transmission towers RKE transmitter VSM	Go to Pinpoint Test J .
The remote keyless entry (RKE) transmitter is out of synchronization	Remote keyless entry (RKE) transmitter RKE transmitter button is pressed a substantial amount of times while outside the range of the vehicle VSM	Go to Pinpoint Test K .
The smart lock does not operate correctly	Circuitry Driver door ajar switch UART-UBP communications network VSM	Go to Pinpoint Test L .