2009 Nissan GT-R Owner's Manual - Page 263

Recommended battery: Lithium battery CR2032 or an equivalent. 1. Disengage the lock on the reverse side of the Intelligent Key while pulling out the mechanical key. 1 2. Insert a flat-bladed screwdriver * 2 wrapped with a cloth into the slit * and twist it to separate the case into the upper and lower parts. NOTICE Because there is the risk of scratching the key, wrap a cloth or similar item around the screwdriver when separating the parts. If the screwdriver is inserted too far into the key, it may damage the internal circuit board. 3. Remove the old battery and insert a new battery with the + side facing down. 4. Reconnect the upper and lower parts of the Intelligent Key. See a GT-R certified NISSAN dealer if you need any assistance for replacement. NOTICE . Be sure that the + and − sides of the battery are facing in the correct directions when the battery is inserted. . Do not touch the internal circuits or electronic terminals. Doing so may damage them. NOTE: After replacing the battery, be sure to check and check that all Intelligent Key system functions operate correctly. FCC Notice: This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against 8-24 Maintenance and do-it-yourself