Toyota 2012 Highlander Owner's Manual page 554

Ignition system
Spark plug
Make
Gap
NOTICE
■
Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust gap when tuning engine.
Electrical system
Battery
Open voltage* at
68°F (20°C):
Charging rates
2.7 L 4-cylinder (1AR-FE) engine
DENSO, SK16HR11
3.5 L V6 (2GR-FE) engine
DENSO FK20HR11
0.043 in. (1.1 mm)
12.6 ⎯ 12.8 V Fully charged
12.2 ⎯ 12.4 V Half charged
11.8 ⎯ 12.0 V Discharged
(*: Voltage is checked 20 minutes after the engine
and all the lights are turned off)
5 A max.
6-1. Specifications
581
6