Mercedes Benz GLS63 AMG Service in Dubai

The turbocharger boosts engine power and performance. A lousy turbocharger can cause power loss, engine stalling, or failure. The turbocharger of the GLS 450 has been known to malfunction. Timing chain tensioner issues are another GLS engine issue. This element keeps the engine’s timing chain in position and running properly. The tensioner might fail and harm the engine, which is costly to fix. Owners of the GLS 450 should be aware of this risk. Another prevalent GLS engine issue is carbon buildup. Carbon deposits on intake valves cause rough idling and misfires. The GLS 350d’s intake valves may be cleaned to fix this issue. GLS owners have experienced engine oil separator difficulties. Oil and air are separated in the crankcase by the oil separator. If the oil separator breaks, oil can flow into the engine’s intake, reducing performance and other difficulties.

Many first-generation GLS owners claim that the low beams of the basic halogen headlights are too dim to see the road at night. Halogen headlights were standard on 2017–2019 GLS and GL models. Only the first-gen GLS had brighter LED headlights. Halogen headlights have been successful for decades. However, GLS owners say their conventional headlights are not as bright as those in comparable vehicles. Plug-and-play bulb replacement is the cheapest option. Upgrade to HID or retrofit LED lights is another typical remedy. Since the headlight system is not built for these bulbs, extra wiring and modifications are needed to produce the appropriate beam pattern. Unfortunately, replacing halogen headlights with OEM LED headlights requires more complicated rewiring and reprogramming of the car’s electrical system.

Some GLS owners report a moldy smell while the AC is on.
It’s frequent in 2010 Mercedes-Benz automobiles and sparked a class-action lawsuit that the firm settled. Mold forms in the car’s evaporator owing to moisture, causing the moldy smell. Being beneath the dashboard, the warm, wet, and gloomy atmosphere encourages mold growth. Many GLS owners removed the HVAC’s moldy stench by pouring Lysol, Ozium, or a similar disinfectant into the air vents. If the problem persists, deep clean the HVAC system, which is laborious.

Second-generation GLSs feature EQ Boost, a 48-volt mild hybrid technology with some faults. Since the hybrid battery powers the engine’s starter motor, a 48-volt battery failure prevents the car from starting. A dash-mounted ‘Stop Vehicle’ error often indicates a 48V or 12V battery issue. Many GLS owners who had the 48-volt battery mistake early on found that cleaning the terminals fixed it. Some batteries had partly painted terminals, causing electrical difficulties.