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2010 Toyota Highlander Hybrid Limited – ABS Relays Clicking With C1253 and C1256
CUSTOMER CONCERN The ABS relays click rapidly after an incorrect brake-bleeding attempt, and DTCs C1253 and C1256 are stored. CAUSE Power, ground, and communication checks confirmed an internal failure of the skid-control electronic control unit. CORRECTION Remove and replace the failed skid-control electronic control unit.
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