2011 Cadillac DTS Owner's Manual - Page 123

See your dealer or a locksmith who can service PASS-Key III+ to get a new key blank that is cut exactly as the ignition key that operates the system. To program the new key: 1. Verify that the new key has a Starting and Operating Your Vehicle New Vehicle Break-In Notice: The vehicle does not need an elaborate break-in. But it will perform better in the long run if you follow these guidelines: . 1 stamped on it. 2. Insert the original, already programmed, key in the ignition and start the engine. If the engine will not start, see your dealer for service. 3. After the engine has started, turn the key to LOCK/ OFF, and remove the key. 4. Insert the new key to be programmed and turn it to the ON/RUN position within five seconds of turning the original key to LOCK/OFF. The security light will turn off once the key has been programmed. 5. Repeat Steps 1 through 4 if additional keys are to be programmed. If you lose or damage your PASS-Key III+ key, see your dealer or a locksmith who can service PASS-Key III+ to have a new key made. Do not leave the key or device that disarms or deactivates the theft-deterrent system in the vehicle. Do not drive at any one constant speed, fast or slow, for the first 500 miles (805 km). Do not make full-throttle starts. Avoid downshifting to brake or slow the vehicle. Avoid making hard stops for the first 200 miles (322 km) or so. During this time the new brake linings are not yet broken in. Hard stops with new linings can mean premature wear and earlier replacement. Follow this breaking-in guideline every time you get new brake linings. Do not tow a trailer during break-in. See Towing a Trailer on page 5‑26 for the trailer towing capabilities of your vehicle and more information. . . Following break‐in, engine speed and load can be gradually increased. 3-21