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Ouch. Even though it's expensive, you made the right move. I'm pulling my right side door off tomorrow to replace the cable. Hopefully that's all that's wrong. I have a new cable and handle. Also replacing the speaker. Let us know how yours turns out.
Also, always remember to only check pressure when tires are cool. when they're nerdy, they aren't in touch with their inner pressures, and might give false readings.