BMW 750Li engine light activation accompanied by whistle sound, potential water pump or timing belt issue on BMW 750Li

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some BMW 750Li owners report experiencing engine light activation accompanied by a whistle sound, which could indicate potential issues with the water pump or timing belt. This whistle may signal a failing water pump, crucial for circulating coolant and preventing engine overheating, which, if neglected, can lead to severe engine damage. Additionally, the sound might suggest a problem with the timing belt, essential for synchronizing internal engine components; a failure here could result in serious engine issues or even complete engine failure if not addressed promptly. Owners are advised to consult a qualified mechanic or BMW specialist for diagnosis and necessary repairs, as timely attention to these symptoms is vital for preventing further damage and ensuring the vehicle's performance.

1 person reported this problem
0 comments
Schedule Repair

BMW 750Li vehicles with this problem

0 model year affected

Search for another problem

RepairPal Car Genius

Ask our experts about your BMW.

RepairPal Car Genius™ is a free resource for vehicle owners seeking advice on maintenance, auto repair, shop inquiries, estimates, and finding a trustworthy repair shop in your area.

 Auto Repair Expert Auto Repair Expert

Call us at 877-913-1554

Available 9am – 6pm ET Monday through Friday

Call Our Experts