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12V socket stops working after a few minutes. Why?

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The low voltage accessory port can provide up to 16 amps peak and 12 amps continuous. The inflator pump you are using must be exceeding those limits. The Tesla Model Y uses electronic overload protection so there is no fuse that needs to be replaced. Wait about 15 minutes and the port should be active again (assuming you have corrected whatever caused the overload.)

You may have to replace the tire inflator with one that is compatible with the 2023 Tesla Model Y's low voltage system. The low voltage accessory port output is now ~16V (check that the tire inflator can be operated at 16V, some may only be able operate at up to ~15V.) As far as I am aware the maximum amperage draw for the accessory port remains 12 amps /16 amps (peak).
 
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