"N20 PRESSURE SWITCH - LEAK DIAGNOSIS MODULE (NVLD): LIMITED WARRANTY EXTENSION TO 10 YEARS/120,000 MILES. INFORMATION For the eligible vehicles, BMW of North America, LLC (""BMW NA"") is extending the limited warranty for the pressure switch, leak diagnosis module (NVLD) to: 10 years/120,000 miles as determined by the vehicle's original in-service date Note: This bulletin is notice of a ""limited warranty extension."" This is NOT a notice of a Recall or Service Action. There is no immediate repair required unless the BMW vehicle is currently experiencing this problem. Customer Notification Letter - VIN and Component-specific Warranty Extension Even though this is NOT a Recall, BMW NA will be sending VIN-specific customer notification letters in a phased release."