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What are the essential items for BMW major maintenance?

1 Answers

AdalineLynn

07/29/25 9:38pm

BMW major maintenance essential items include: inspecting the engine, chassis, and transmission; replacing the oil filter, cabin air filter, and engine air filter; cleaning the engine and throttle body; checking wheel hubs and brake systems; replacing spark plugs and engine belts; cleaning the air conditioning system; and inspecting the battery - seven key procedures. Major vehicle maintenance, also known as third-level maintenance, is a series of preservation measures implemented after several secondary maintenance cycles to consolidate and maintain the normal operational performance of all assemblies and components. Vehicles should undergo major maintenance every 50,000-60,000 kilometers. This procedure ranks second only to complete vehicle overhaul, focusing on disassembling assemblies for thorough cleaning, inspection, adjustment, and potential issue resolution. Beyond secondary maintenance tasks, it involves deeper cleaning and examination, with necessary disassembly of assemblies or components to eliminate faults, remove carbon deposits, oil sludge, and varnish buildup. This includes flushing oil passages, descaling cooling systems, cleaning oil pans and fuel tanks, disassembling and adjusting chassis assemblies with fluid replacement, inspecting and adjusting wheel alignment, plus conducting frame/body inspections with rust removal and touch-up painting.

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