Jump Starting a Toyota Sienna

If your Toyota Sienna will not start First do Simple checks Before JUMP Starting making these checks, make sure you have followed the correct starting procedure and that you have sufficient fuel. If your Toyota Sienna  is equipped with the engine immobiliser system, also check whether the other keys will start the engine. If they work, your key may be broken. Have the key checked at your Toyota dealer. If none of your keys work, the system is possibly broken. Call your Toyota Sienna dealer. If the Toyota Sienna engine is not turning over or is turning over too slowly Check that the Toyota Sienna  battery terminals are tight and clean. If the battery terminals are O.K., switch on the interior light. If the Toyota Sienna light is out, dim or goes out when the Toyota Sienna starter is cranked, the battery is discharged. You may try jump starting.   If the light is O.K., but the engine still will not start, it needs adjustment or repair. Call a Toyota Sienna  dealer or qualified Toyota Sienna repair shop. Do not pull-or push-start the Toyota Sienna. It may damage the vehicle or cause a collision when the engine starts. Also the three-way catalytic converter may overheat and become a fire hazard.
If the Toyota Sienna engine turns over at its normal speed but will not start— Check that all the push-on connectors are tight. (For example, connectors at the Toyota Sienna spark plugs, ignition coil and/or distributor) If the connectors are O.K., the Toyota Sienna engine may be flooded because of repeated cranking.  Starting a flooded engine” for further instructions.  Starting a flooded Toyota Sienna engine If the engine will not start, your engine may be flooded because of repeated cranking. If this happens, turn the Toyota Sienna key to “START” with the accelerator pedal held down. Keep the key and accelerator pedal so for 15 seconds and release them. Then try starting the engine with your foot off the accelerator pedal. If the Toyota Sienna engine does not start after 15 seconds of cranking, release the key, wait a few minutes and try again. If the engine still will not start, it needs adjustment or repair. Call a Toyota dealer or qualified repair shop for assistance. Do not crank for more than 30 seconds at a time. This may overheat the Toyota Sienna starter and Toyota Sienna wiring systems. Toyota Sienna Jump starting Jump starting can be dangerous if done incorrectly. Therefore, to avoid harm to yourself or damage to your Toyota Sienna or battery, follow the Toyota Sienna jump starting procedures. If in doubt, we strongly recommend that you have a competent technician or towing service jump start your Toyota Sienna. Toyota Sienna EMERGENCY STARTING CAUTION Use only a 12-volt jumper system. You can damage a 12-volt starting motor, Toyota Sienna ignition system, and other electrical parts beyond repair by use of a 24-volt power supply (either two 12-volt batteries in series or a 24-volt motor generator set).WARNING - Battery Keep all flames or sparks away from the battery. The battery produces hydrogen gas which may explode if exposed to flame or sparks. Do not attempt to jump start the Toyota Sienna if the discharged battery frozen or if the electrolyte level low; the battery may rupture or explode. WARNING - Battery Never attempt to check the electrolyte level of he battery as this cause the battery to rupture or explode causing serious injury. Jump starting procedure1. Make sure the Toyota Sienna booster battery is 12-volt and that its negative terminal is grounded. 2. If the booster battery is in another Toyota Sienna, do not allow the Toyota Sienna's to touch.3. Turn off all unnecessary electrical loads.

4. Connect the Toyota Sienna jumper cables in the exact sequence shown in the previous illustration. First connect one end of a jumper cable to the positive terminal of the discharged Toyota Sienna battery (1), then connect the other end to the positive terminal on the booster battery (2). Proceed to connect one end of the other jumper cable to the negative terminal of the booster battery (3), then the other end to a solid, stationary, metallic point (for example, the Toyota Sienna engine lifting bracket)away from the battery (4). Do not connect it to or near any part that moves when the Toyota Sienna engine is cranked. CAUTION - Battery cables Do not connect the jumper cable from the negative terminal of the booster battery to the negative terminal of the discharged battery. This can cause the discharged battery to overheat and crack, releasing battery acid. Do not allow the jumper cables to contact anything except the correct battery terminals or the correct ground. Do not lean over the Toyota Sienna battery when making connections. Start the engine of the Toyota Sienna with the booster battery and let it run at 2,000rpm, then start the engine of the Toyota Sienna with the discharged battery. the cause of your battery discharging is not apparent, you should have your Toyota Sienna checked by an Authorized Toyota Sienna Dealer .Push-starting Toyota Sienna's equipped with automatic transaxle cannot be push-started. jump-starting. CAUTION Never tow a Toyota Sienna to start it because the sudden surge forward when the engine starts could cause a collision with the tow Toyota Sienna.
2. Turn on your Toyota Sienna emergency flashers. 3. Try to start the Toyota Sienna engine again. If your Toyota Sienna will not start, contact an authorized Toyota Sienna dealer or seek other qualified assistance.
Jump Starting a Toyota Sienna