adrian_held1
MR2 Power Window Reset
Summary of the thread
After replacing the battery in a 2005 Toyota MR2, the power windows stopped functioning due to a window regulator initialization problem. This issue often arises because the regulator loses its data during a battery swap. The solution typically involves re-initializing the regulator, which may require a specific sequence or a diagnostic tool. In this case, a visit to a professional technician was necessary to reset the system using a diagnostic tool.
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4 comment(s)
adrian_held1 (community.author)
Thanks! Yeah, the diagnostic tool mentioned a window regulator initialization issue, but no specific sequence. Can I fix this without a pro diagnostic tool, or am I stuck going to a shop?
alinaphoenix88
The error codes confirm it's a loss of window regulator adaptation. Some cars let you re-initialize manually by holding the window switch in certain positions, but the 2005 MR2 often needs a diagnostic tool to recalibrate. Trying random stuff could damage the system. I'd suggest a qualified technician.
adrian_held1 (community.author)
Appreciate the advice. Looks like a shop visit was needed. You were right, it was a window regulator adaptation thing. They plugged it into the computer and reset it all. Cost 290€, but at least it's fixed. Thanks again!
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TOYOTA
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MR2
alinaphoenix88
Sounds like the window regulator lost its data after the battery swap. Common in newer cars. Regulator needs initializing, usually with a specific window movement sequence or a diagnostic tool. Any error codes related to the window regulators?