Mercedes-Benz GL450 engine shuts off when it rains, starts briefly before shutting down again on Mercedes-Benz GL450

Some Mercedes-Benz GL450 owners report experiencing engine shutdown issues when it rains, which may be attributed to several factors. These include moisture-related electrical issues where rain allows water to seep into sensitive components, leading to malfunctions that result in engine shutdown. Additionally, wet conditions may affect faulty sensors responsible for engine operation, causing the engine to start briefly before shutting down due to incorrect readings. Some owners also report ignition system problems, where water intrusion disrupts the spark needed for combustion, leading to stalling shortly after starting. Furthermore, moisture in the fuel system can impact fuel delivery, causing intermittent engine shutdowns. Lastly, water exposure can corrode or damage wiring connections, resulting in erratic behavior such as starting briefly before shutting down. It is advisable for owners experiencing these issues to consult a qualified mechanic or dealership for a thorough inspection and diagnosis.