按症状排除故障

症状

• ABS warning light stays on while driving
• ABS and stability functions disabled while the light is lit
• Light appears after driving through deep water or potholes, then clears
• Intermittent light that corresponds to hitting a bump

原因

A wheel speed sensor can fail or get fouled by metal debris, cutting the speed signal to the ABS module. Sensor failures are among the most commonly cited causes of the ABS light in Myvi owner groups. On some cars the wiring harness to a sensor survives. On D20N Myvis the front sensors carry Perodua-style codes of the 89542-BZ120 / 89543-BZ120 type as listed by local parts sellers, but sensor codes vary by position and year, so confirm before ordering.

解决方案

A workshop reads the stored ABS code and it names the wheel. Tell them when the light came on, whether it was deep water or a pothole, and whether it clears by itself. That story points at dirt on a sensor rather than a dead unit. A basic scan runs RM80 to RM150, a full all-module read RM150 to RM250, and most shops waive the fee if you book the repair with them. A replacement sensor lands around RM190 fitted. Braking feel stays normal with ABS disabled, but stopping distances on loose or wet surfaces get worse, so do not sit on it for months.

预估费用:~RM 190·便宜·含安装 · 未注明日期

症状

• Vent air cools weakly, worst in slow traffic and afternoons
• Compressor clutch cycles on and off rapidly
• Cold at highway speed but weak at idle
• Oily residue around condenser pipes or hose joints (leak indicator)

原因

Reported Myvi aircond failures cluster around three causes: refrigerant leaking past aged O-rings or the condenser, a worn Denso compressor whose magnetic clutch starts slipping, and clogged condenser fins that cannot reject heat in urban traffic. The compressor is the expensive one; separate Malaysian price guides put a new original Denso compressor well above a reconditioned or OEM-market replacement once labour is added.

解决方案

Get a pressure test and leak check first. Clean the condenser and fan before replacing anything, since a blocked condenser alone mimics a weak compressor. Regas with the correct measured charge if the system holds. If the clutch slips constantly or the compressor rattles, replace it; a reconditioned Denso unit is the budget path, a new Denso unit the durable path. Change the receiver-drier every time the circuit is opened.

预估费用:~RM 300·中等·未注明计价方式 · 截至 2026年11月1日

症状

• Engine dies while idling at a junction, a car park or a drive-through
• Long crank before it fires, and sometimes no start at all
• Power drops away under load, then comes back after a restart
• No warning light, no stored complaint the owner can see

原因

The Denso fuel pump fitted to early third-generation Myvis came from a batch caught in a global Denso recall. Solvent used during production was left drying for too long, which could crack the pump's surface and let it absorb fuel until the impeller deformed and the pump stopped. Perodua ran it as a special service campaign rather than a public recall: owners of affected cars were written to in stages, and the pump was swapped free. Cars built from October 2019 onward are not in the affected build range.

解决方案

Ask a Perodua service centre whether your car is in the campaign, using the chassis and engine numbers rather than the registration date. The replacement costs nothing and takes about half a day. Perodua said the failure shows up when the car is stationary rather than at speed, but a car that has just cut out at a traffic light is a car that will not restart, so do not leave it on the list for months. If the pump has already been changed, the invoice is the proof, and it is worth keeping with the service book when you sell.

预估费用:~RM 0·免费·未注明计价方式 · 截至 2026年11月1日

症状

• 低速时（10-30 km/h）出现抖动或振动
• 从静止起步加速时出现迟滞
• 低转速时变速箱发出异常噪音

原因

Perodua CVT采用钢带和皮带轮系统，随着CVT油液劣化，可能会出现抖动。 低速抖动在走走停停的路况中更为明显，在炎热气候下会加剧。

解决方案

更换符合OEM规格的CVTF FE油液通常可以解决问题。 如果更换油液后问题仍然存在，请检查CVT钢带是否磨损。 及早发现可以避免昂贵的维修费用。

预估费用:~RM 180·便宜·未注明计价方式 · 未注明日期

症状

• 怠速时方向盘和仪表台能感受到振动
• 从P挡挂入D挡时发出哐当声
• 空挡踩油门时可见引擎明显移动

原因

Myvi的引擎支架使用橡胶衬套来吸收振动。随着时间推移， 尤其是在马来西亚城市常见的走走停停的交通状况下，橡胶会老化并开裂。 由于引擎扭矩负载，左侧（副驾驶侧）支架最容易失效。

解决方案

更换磨损的引擎支架。左侧支架最常受到影响。当其中一个支架失效时， 应检查全部三个支架，其他支架可能也即将达到使用寿命。 建议使用OEM支架以获得最佳NVH性能。

预估费用:~RM 150·便宜·未注明计价方式 · 未注明日期

症状

• Idle flutters or hunts between low and normal rpm
• Creep feels jerky at parking speed (CVT surge from idle instability)
• Idle dips when the aircond compressor kicks in
• Slight hesitation when pulling away from a stop

原因

Carbon and oil vapour deposits build up in the throttle bore and on the butterfly plate and idle air passages. Malaysian servicing guides describe sticky throttle body deposits as a routine Myvi issue in the 40,000-80,000km window, and it is worse on cars with higher idle hours in traffic.

解决方案

A workshop cleans the throttle body and finishes with an idle relearn on a scan tool. A spray-only clean runs RM80 to RM120 and often comes back. A full clean with the relearn runs RM150 to RM250. Tell them the idle hunts and dips when the aircond cuts in, so they start at the throttle body rather than the gearbox. Leave the relearn to the shop that did the work. The battery disconnect trick at home is a coin toss, and a bad idle for a week is a poor way to save RM40.

预估费用:~RM 180·便宜·未注明计价方式 · 未注明日期

症状

• Fan runs only on the highest setting; the lower speeds do nothing
• The fan works, then stops on one setting and later comes back
• Air stays cold at full blast but the cabin is noisy and the cold is uneven
• Speed settings die one at a time, starting with the slowest

原因

The blower resistor pack, which is the fan speed control, sits in the air stream behind the glovebox and drops voltage for each speed below maximum. When it fails, the top setting keeps working because full speed bypasses the resistor, so the fan appears healthy while every other setting is dead. Heat and damp in a Malaysian cabin are what kills it, not the blower motor.

解决方案

Replace the resistor pack rather than the blower motor. A workshop reaches it behind the glovebox in half an hour, and the part is sold for the third-generation car by Malaysian listings. Budget RM80 to RM140 fitted at 2026 prices. If nothing works on any setting, including the top one, that is the motor or its fuse and a different job.

预估费用:~RM 120·便宜·含安装 · 截至 2026年11月1日

症状

• 颠簸路面上仪表板区域发出异响
• A柱饰板发出吱吱声
• 中控台有松动感

原因

早期生产的Myvi车型（2018-2020款）存在装配和表面处理方面的问题， 内饰饰板卡扣未牢固固定。仪表板和A柱饰板尤其容易产生振动。

解决方案

在饰板背面的接触点粘贴背胶毛毡胶带。 更换损坏的塑料卡扣。大多数异响可以在不到RM10的成本内消除。

预估费用:~RM 10·免费·未注明计价方式 · 未注明日期

症状

• Whistle or whine that follows road speed, loudest from about 40 to 80 km/h
• Appears when you press the accelerator and fades when you lift off
• Easy to hear with the radio off, and easier with passengers in the car
• No shudder, no delayed engagement, no warning light

原因

The D-CVT fitted from the November 2021 facelift uses a belt and pulley set, and the belt runs under load at a pitch the cabin hears as a whistle. Owners who took the car to a Perodua service centre were told it is the gearbox characteristic, and a technician demonstrated it on other D-CVT Myvis, including a 1.5. The pre-facelift four-speed automatic does not make the sound at all, which is why people who traded up notice it immediately.

解决方案

Nothing needs replacing when the noise is the belt whine: it is how the gearbox sounds, and it does not get worse with mileage in the reports so far. Two things separate it from a fault. A failing alternator or belt idler will also whine with the car standing and the engine revved in neutral, because it is driven by the engine rather than by road speed. A CVT that is actually slipping comes with revs that climb without the car speeding up, shudder on pull-away, or a delayed engagement when you select drive.

预估费用:~RM 0·免费·未注明计价方式 · 截至 2026年11月1日

症状

• 车窗移动缓慢或卡在半路
• 完全关闭时车窗轻微下降 (防夹手 (anti-pinch) 对准偏差)
• 车窗升降器 (regulator) 发出研磨噪音

原因

早期生产的 Myvi 车型 (2018-2021) 所使用的车窗电机和升降器总成 (regulator assembly) 可能会过早磨损。电机碳刷 (brushes) 会磨损，升降器钢索 (cables) 可能会断裂或起毛， 尤其是在经常使用的车窗上 (驾驶员侧影响最大)。

解决方案

更换车窗升降器总成 (window regulator assembly)。电机和升降器作为单一整体出售。 更换时使用硅酮喷剂 (silicone spray) 润滑车窗导槽，以延长新总成的使用寿命。

预估费用:~RM 80·便宜·未注明计价方式 · 未注明日期