Mercedes-Benz GL450 no start issue with no clicking sounds on Mercedes-Benz GL450

Submitted by Vehicle Owner · Dec 9, 2025
Published by RepairPal

Problem overview

Some Mercedes-Benz GL450 owners report experiencing no-start issues without any clicking sounds, potentially due to several underlying problems. A weak or faulty battery may prevent the starter motor from engaging, leading to this condition, and performing a load test can help diagnose the battery's health. Additionally, some owners find that a defective starter motor or relay is responsible for the no-start issue, necessitating replacement for resolution. Issues with the ignition switch can also contribute to the problem, requiring professional inspection and repair. Furthermore, problems within the fuel system, such as inadequate fuel delivery to the engine, may cause a no-start condition, making it crucial to ensure the fuel pump is functioning correctly. Finally, faulty electrical components like sensors, switches, or wiring related to the starting system could also be contributing factors. If these issues cannot be diagnosed or fixed independently, consulting a qualified mechanic or dealership is recommended for a thorough inspection and proper repair.

2 people reported this problem
1 comment
Schedule Repair

Mercedes-Benz GL450 vehicles with this problem

1 model year affected
Average mileage: 170,523 miles
(170,523 - 170,523)

Search for another problem

RepairPal Car Genius

Ask our experts about your Mercedes-Benz.

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
© 2026 RepairPal, Inc. RepairPal® RepairPal Certified®