Volkswagen Passat, 2013

Webasto, heated windshield, xenon headlights, tow bar, autohold, climate control, cruise control, etc. The red oil light comes on occasionally! The engine runs smoothly and without any unusual noises. While trying to solve the problem, the following were replaced with original parts: the timing belt with the water pump, and the oil pump - it did not help. Repair costs in August exceeded 2000eu (I have all the invoices) Rust under the handles; hood and bumper defects.