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Toyota Sienna

Will unhooking the battery after replacing an ignition coil on a 1999 Toyota Sienna reset the check engine light?


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Wiki User
2005-10-25 22:24:33
2005-10-25 22:24:33

Since all cars after '96 have OBD 11 it takes a scanner to remove the trouble codes. Auto Zone will do it for free. it does have obdII but the codes will be erased by unhooking the battery.

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No. But; The van may seem to act a little different until it re-learns what it forgot.

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My check engine light came on because the terminals were not connected tightly. no. quite the contrary. if you have a "check engine" light on, disconnecting, or in this case replacing the battery will turn it off. you have a different problem.

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Just happened to me too, 3 year battery was 3 years and 3 m. old, tightened the alt. belt that helped but still idles at about 600 rpm. Ran well before the battery went,

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There is about three ignition coils , one for each 2 valves ...


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