2010 Acura TL Owner's Manual - Page 144

Keys and Locks On models without keyless access system KEY MASTER KEY NUMBER WITH REMOTE TAG TRANSMITTER VALET KEY (GRAY) You should have received a key number tag with your key. You will need this key number if you ever have to get a lost key replaced. Use only an Acura-approved key blank. These keys contain electronic circuits that are activated by the immobilizer system. They will not work to start the engine if the circuits are damaged. Instruments and Controls Protect the key from direct sunlight, high temperature, and high humidity. Do not drop the keys or set heavy objects on them. Keep the keys away from liquids. If they get wet, dry them immediately with a soft cloth. The valet key does not contain a battery. Do not try to take it apart. The master key fits all the locks on your vehicle. The valet key works only in the ignition and the driver's door lock. You can keep the trunk pass-through cover and the glove box locked when you leave your vehicle and the valet key at a parking facility. CONTINUED 141 2010 TL