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1K0129618CD 1KD129618H Air Intake Hose: Diagnosis and OE Fitment Guide
QUICK ANSWER A suspected damaged, loose or incorrectly fitted intake-air path should be confirmed through fault data and physical inspection before a replacement part is ordered....
5Q0121070BQ 5Q0121070BT 5QD121064 Coolant Hose: Diagnosis and OE Fitment Guide
QUICK ANSWER A suspected coolant-hose leak or loss of cooling-system integrity should be confirmed through fault data and physical inspection before a replacement part is ordered....