Cadillac 2010 CTS Owner's Manual

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9-72 Vehicle CareThe TPMS sensors can also bematched to each tire/wheel positionby increasing or decreasing thetire's air pressure. If increasing thetire's air pressure, do not exceedthe maximum inflation pressureindicated on the tire's sidewall.To decrease the tire's air-pressureuse the pointed end of the valvecap, a pencil-style air pressuregage, or a key.You have two minutes to match thefirst tire/wheel position, andfive minutes overall, to match allfour tire/wheel positions. If it takeslonger than two minutes, to matchthe first tire and wheel, or more thanfive minutes to match all four tireand wheel positions, the matchingprocess stops and you need tostart over.The TPMS matching process isoutlined below:1. Set the parking brake.2. Turn the ignition switch toON/RUN with the engine off.3. Press the Remote Keyless Entry(RKE) transmitter's lock andunlock buttons at the same timefor approximately five seconds.The horn sounds twice to signalthe receiver is in relearn modeand Tire Learning Activemessage displays on the DICscreen.4. Start with the driver sidefront tire.5. Remove the valve cap from thevalve stem. Activate the TPMSsensor by increasing ordecreasing the tire's air pressurefor 10 seconds, or until a hornchirp sounds. The horn chirp,which can take up to 30 secondsto sound, confirms that theTPMS sensor identification codehas been matched to this tireposition.6. Proceed to the passenger sidefront tire, and repeat theprocedure in Step 5.7. Proceed to the passenger siderear tire, and repeat theprocedure in Step 5.8. Proceed to the driver side reartire, and repeat the procedurein Step 5.9. After hearing the confirming hornchirp, for the driver side rear tire,the horn sounds two more timesto signal the tire learning modeis no longer active. Turn theignition switch to LOCK/OFF.10. Set all four tires to therecommended air pressurelevel as indicated on the tireand loading information label.11. Put the valve caps back on thevalve stems.