2007 Lexus GS 350 Owners Manual - Page 461

4-3. Do-it-yourself maintenance n Before recharging When recharging, the battery produces hydrogen gas which is flammable and explosive. Therefore, before recharging: l If recharging with the battery installed on the vehicle, be sure to disconnect the ground cable. l Make sure the engine switch on the charger is off when connecting and discon- necting the charger cables to the battery. n After recharging/reconnecting the battery In some cases, the engine may not start. Follow one or both of the following procedures: l After opening and closing the driver's door, wait 10 seconds then attempt to start the engine. (If the system does not start first time, repeat the procedure.) l With the shift lever in "P" and the engine switch in the "OFF" mode, open and close any door, then attempt to start the engine. If the system will not start even after multiple attempts at both methods, contact your Lexus dealer. 4 Maintenance and care 387