Modern Tire Dealer

MAY 2019

Magazine for the professional tire industry

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M T D M a y 2 0 1 9 56 SUBJECT VEHICLE: Dodge Journey, 2009-2018 RELEARN PROCEDURE? Yes. SPECIAL TOOLS NEEDED? Yes, a RKE- TPMS analyzer can be used in conjunction with a scan tool. T he tire pressure monitoring system (TPMS) on the 2009-2018 Chrys- ler/Dodge Journey monitors air pressure in the four road tires. Pressure in the spare tire is not monitored. e system alerts the driver when tire pressure falls outside predeter- mined thresholds. e TPMS is controlled by the wireless control module (WCM), commonly referred to as the sentry key remote entry module (SKREEM). An indicator light located in the instru- ment cluster and the electronic vehicle information center (EVIC), if equipped, are used to communicate system information. e TPMS uses radio and sensor technology to monitor tire air pressure levels. Sensors, mounted to each road wheel as part of the valve stem, transmit an RF signal indicat- ing their individual pressure to a receiver located in the SKREEM. ese transmissions occur approxi- mately once every minute at speeds over 15 mph (24 km/h). e TPMS remains active even if no tire pressure-related message is displayed. The sensors lay dormant (Park Mode), then wake and start transmitting (Drive Mode) when the vehicle first reaches speeds over 15 mph (24 km/h). Once the wheels stop rotating for a period of approximately 20 minutes, the sensors shut down until again awakened. Although not transmitting as when in Drive Mode, while in Park Mode, the sensors still transmit approximately once every 13 hours to let the receiver know air pressure status at that time. Sensors will also transmit when a pressure change of 1 psi (7 kPa) or more is detected during that period. Under the following conditions, the system may not function properly: • e areas, facilities or devices that use similar radio wave frequencies are located in the vicinity of the vehicle. • A radio device of similar frequency is used near the vehicle. • A lot of snow or ice is stuck to the vehicle, especially around the wheels or wheel housings. • e battery of the sensor has been depleted (approximate 10-year life span). T P M S Dodge Journey – 2009-2018 T P M S COURTESY OF FCA US LLC. Figure 1: Identifying tire pressure sensor components (2009-10 — 1 of 2).

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