2000 Toyota Tundra Battery Light On But Alternator Is Charging

If you have a 2007-2012 Toyota Tundra or Sequoia with a nolow charging condition even after you have replaced the battery and alternator you will want to check the engine idle and clean the throttle body if needed.

2000 toyota tundra battery light on but alternator is charging. I am trying to find out why may battery light is on with out spending 10000 for diagnostic. If starts charging theres broken wire or fuse in the charging circuit somewhere in the truck. Simply charge the battery and restart the vehicle to troubleshoot whether the issue is the alternator or the battery.

4000 Refundable Core Deposit. Start truck use jumper cables or use scrap wire to connect alternator directly from alternator positive out to battery positive. A free State.

With the battery warning light off standard charging current as measured at the alternator B wire should be 10 amps or less and charging voltage should range between 132 to 148 volts. 2000 Toyota Tundra. Mine went out at 150k I bought a used Toyota alt from a sequoia with 12k miles and have had no issues since.

If the alternator sees low voltage to battery due to corrosion in between layers on this it will think it is charging a low battery and crank up the voltage. Take the 12-14mm nut off the positive post and clean in between ALL the stacked leads on there. If you see your Tundras battery light turns on while the engine is already running that is a strong indication that the alternator is no longer providing enough wattage to power the various electrical systems and charge the battery at the same time.

If it was I dont know how to remove the dummy light. The battery is fine it has no trouble starting or holding a charge. The battery light goes off when the alternator.

It should be greater than 13 volts less than 15V. 17 DCSB V6 2wd Sr5. Duralast Remanufactured Alternator 12802.