Visual Inspection and Diagnostic Pre-checks
Inspect the key for damage Inspect the key batteries Inspect for aftermarket RKE systems
PINPOINT TEST Q : THE RKE (REMOTE KEYLESS ENTRY) TRANSMITTER HAS POOR RANGE PERFORMANCE
NOTE: At least 2 programmed keys must be present to begin diagnosis of the RKE system.
Q1 CHECK FOR THE CORRECT KEYS
Check that the correct keys are used with the vehicle. Refer to the PATS Job Aid in the Service Tips tab on the Professional Technician Society (PTS) web page.
Are the correct keys present?
Yes | GO to Q2 |
|---|---|
No | The system cannot be tested without the correct keys. INFORM the customer the correct keys must be present to proceed with diagnosis of the system. |
Q2 CHECK ALL KEYS FOR POOR RANGE PERFORMANCE
NOTE: Make sure the vehicle is in an open area with no other large metal objects near, such as other vehicles or steel buildings. Check all keys for normal range performance (approximately 50m (165 ft.).
Do all keys experience poor range?
Yes | GO to Q4 |
|---|---|
No | GO to Q3 |
Q3 CHECK THE KEY BATTERIES
NOTE: Do not clean off any grease from the battery terminals on the back surface of the circuit board. Remove the passive key batteries. Refer to the Owner Guide for battery removal instructions. Verify the correct batteries are used (CR2025). Measure the key batteries voltage.
Are the voltages greater than 2.5 volts?
Yes | REPLACE the suspect key. PROGRAM the new key. REFER to: Anti-Theft Security Access (419-01B Passive Anti-Theft System (PATS), General Procedures). |
|---|---|
No | REPLACE both key batteries (make sure the batteries are seated correctly). DO NOT reprogram the key (weak or dead batteries do not erase keys from memory). |
Q4 CHECK THE LOCATION OF THE VEHICLE AND THE APPROACH ANGLES AROUND THE VEHICLE
Make sure the poor performance is consistent in nature and is not from one approaching angle. The RKE transmitter range performance may be degraded in certain locations. For example, if the vehicle or RKE transmitter is within range of high-power devices, radio/TV towers, 2-way radios, cell phone charger or other radio communication device, the operating distance of the keys may be reduced.
Is the poor range performance consistent around the vehicle?
Yes | INSTALL a new RTM. REFER to: Radio Transceiver Module (RTM) (419-10 Multifunction Electronic Modules, Removal and Installation). |
|---|---|
No | The system is operating correctly at this time. The range may have been affected by environmental interference such as high-power devices or other radio communication device. |
The Remote Start Feature Is Inoperative
Refer to Wiring Diagrams Cell 13 for schematic and connector information.
Normal Operations and Fault Conditions
REFER to: Handles, Locks, Latches and Entry Systems - System Operation and Component Description (501-14 Handles, Locks, Latches and Entry Systems, Description and Operation).
Possible Cause
2016 Mustang workshop publication supplied to Mustang Atlas. Original technical text and illustrations; HTML formatting by Mustang Atlas. Source page numbering is retained for traceability. Follow the configuration, revision, warnings, and cross-references in the material. About this edition.