Does BMW Generally Need Engine Removal After Water Wading?

[Gerald]

It depends on the situation. If the engine stalls suddenly in water, removal is necessary. Short-term immersion while the engine is off is generally fine, but it's best to have it inspected at a 4S dealership. Flood-damaged Vehicles: Flood-damaged vehicles refer to cars that have been submerged in water, typically involving water exposure to the engine and transmission, with immersion depth exceeding wheel and seat levels, or prolonged contact between underbody components and water. Such vehicles pose significant risks as their electrical systems are prone to short circuits and potential fires. Post-flood Inspection Methods: Visible mud lines on the middle pillars between front and rear doors indicate the vehicle's submersion height. If mud is found after prying open the rubber seals around front/rear windshields with a screwdriver, it confirms complete submersion. Water levels exceeding the hood also classify as full submersion.