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If your Toyota Sienna's backup sensor isn't working, this outer parking sensor might be the fix. Fits 2006-2010 Sienna models, part number 89341-45030 (also listed as 8934145030). From Isumo, brand new. It's listed as a brake drum type — weird, but likely the sensor design resembles that style. This is the outer sensor that helps your vehicle detect obstacles when reversing. Direct interchange with the OEM part. Keep your parking assist system functioning and avoid those bumps when backing up. Simple replacement to restore peace of mind.
