Lexus GX oil pressure warning

That dark oil is a red flag. Think of your engine like a kitchen – if you don't clean the grease regularly, it builds up and causes problems. Dark oil suggests contamination, potentially from exceeding your maintenance interval. How many kilometers are on the oil, and when was the last oil and filter change?

Thank you for the quick response! I am not sure about the oil age. I have traveled 218231 km with the car. Could a simple oil and filter change solve this or is something more drastic needed?

At that mileage and with the oil looking dark, it's highly probable that sludge has accumulated. Imagine it like cholesterol clogging your arteries, hindering oil flow. An oil and filter change might help, but the warning lights suggest the damage is done. I would advise taking it to a workshop for a proper diagnosis. They can check the oil pressure and assess the extent of the contamination before it causes irreversible damage.

I appreciate the advice. You were right, I took it to a local mechanic. They confirmed oil contamination and after cleaning the engine and an oil and filter change (costing 165€), the warning lights are gone. I will pay more attention to the maintenance schedule from now on.