Proton Ertiga High-Mileage Major Repair (796,290 KM · Sri Damansara)

This red Proton Ertiga, with an odometer reading of 796,290 KM, came to 4M Car Care for a comprehensive major repair and maintenance. Nearly 800,000 kilometres — a figure that might suggest 'time to change cars' to many people. But with the right repairs to the engine, chassis and drivetrain, a high-mileage vehicle can still run reliably. This overhaul addressed everything from engine to tyres.

Engine used assembly replacement — after nearly 800,000 KM of operation, the internal wear of the original engine was beyond the reasonable repair range. Replacing with an inspected used engine assembly restores reliable power at a controlled cost — the practical choice for a high-mileage vehicle.

Timing chain kit set replacement — the Proton Ertiga uses a timing chain (not a belt), but after high-mileage use the chain, tensioners and guides also wear and stretch, causing noise on cold starts or timing drift. Full kit replacement required.

Engine mounting set replacement — engine mountings absorb the vibration from engine operation. When the rubber ages, engine vibration is transmitted directly to the body, causing noticeable shaking at idle or when shifting gears. Full set replacement restores smooth driving.

Upper and lower oxygen sensors replacement — oxygen sensors monitor exhaust oxygen content, feeding back to the ECU to adjust fuel injection. When aged, fuel efficiency drops, emissions exceed limits and the engine light comes on (fault codes P0136/P0141 etc.). Replacement restores correct fuel management.

Auto transmission fluid and filter replacement — high-mileage ATF oxidises and degrades, turning darker in colour with a burnt smell, accelerating transmission wear and causing rough gear shifts. New fluid and filter extend transmission life.

Oil seals, O-rings and gaskets replacement — the rubber seals throughout a high-mileage engine are fully aged. Each one inspected and replaced to eliminate leaks at all engine locations.

Engine oil and oil filter replacement — fresh engine oil added after the overhaul is complete, ensuring all internal moving parts operate in a clean, lubricated environment during the break-in period.

Aircond belt and alternator belt replacement — aged, cracked or stretched belts can slip or snap. At high mileage these are a must-replace item; a snapped belt on the road means the aircond stops working or the alternator shuts down.

Coolant replacement — old coolant loses its anti-corrosion properties and accelerates internal corrosion of the cooling system. New coolant protects the radiator, hoses and water pump.

4 × Kapsen K737 195/60R15 tyres + new valve stems — full set of new tyres with new valve stems to ensure airtightness.

Front wheel alignment — 4-wheel alignment performed after engine mounting and tyre replacement to ensure straight-line stability and even tyre wear.

The Proton Ertiga is a practical 7-seat family MPV, and for many families it remains an important means of transport. The cost of replacing it with the same or a similar used vehicle is not necessarily lower than a major overhaul — and a replacement car means getting to know a new vehicle's condition all over again.

The core logic of this overhaul: replace parts that have already exceeded their service life (engine assembly, timing chain, sensors, seals), while completing preventive maintenance (transmission fluid, coolant, belts, tyres) — allowing this car to continue running safely for many more kilometres at a controlled cost.

The maintenance philosophy for high-mileage vehicles: not everything needs replacing, but what needs replacing cannot be skipped. 4M Car Care's approach is to perform a thorough inspection first, report honestly on what needs addressing, then let the owner decide. WhatsApp us to book an inspection.