Lexus ES Common Problems & Reliability
The Lexus ES (2018–present) replaced the rear-wheel-drive GS as the brand’s UK mid-size executive saloon, built on the GA-K platform with a front-wheel-drive layout and a 2.5-litre self-charging hybrid (ES 300h, 215 PS combined). It prioritises comfort and refinement over dynamic engagement, featuring a 10.3-inch touchscreen (post-2022 facelift) and Lexus Safety System+. The ES shares the modern Lexus reliability traits — the hybrid battery cooling fan and 12V auxiliary battery management are critical — but owners should watch for electronic brake actuator noise (a 'squawk' or 'bark' from the footwell), sunroof water ingress on cars fitted with the panoramic roof, and front suspension lower-arm bush wear that can cause vague steering and inner tyre wear. The infotainment touchscreen, particularly on pre-2022 cars using the Remote Touch pad, remains a common ergonomic complaint. Buyers should confirm all over-the-air updates have been applied and verify that any outstanding software patches for the CAN-bus security updates (post-2022) have been completed by a Lexus dealer.
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Detailed fault breakdown, symptoms, and estimated repair bills by production year.
Most Common Lexus ES Faults & Repair Costs
12V Auxiliary Battery Drain
The 12V battery on modern Lexus hybrids can drain quickly if the car is not driven for more than a few days, leading to a completely dead car that requires a jump start or battery replacement. The issue is exacerbated by parasitic draw from the infotainment standby, keyless entry, and connected telematics systems.
Car won't unlock with key fob, Flickering dashboard lights on startup, Hybrid system warning after sitting
- Ask if the battery has ever been replaced
- Check for a trickle charger in the boot
- Test voltage after the car has been sitting for 48 hours
Brake Actuator "Squawk"
Some ES owners report a barking or squawking noise when releasing the brake pedal, caused by the electronic brake actuator calibration. The sound is usually harmless but indicates the actuator pump is cycling excessively. If the actuator fails completely, repair costs can exceed £1,500.
A brief 'squawk' or 'bark' sound from the footwell when braking, Pulsing feel through the brake pedal on release
- Listen carefully during the test drive for hydraulic noises when braking
- Confirm brake warning lights stay off after cold start
Sunroof Water Ingress and Slow Operation
ES models fitted with the panoramic sunroof can suffer from blocked drainage channels, leading to water ingress into the headlining and boot area. Additionally, the sunroof motor and tracks can become slow or noisy over time, particularly in cold weather when grease thickens.
Damp headlining or carpet near the sunroof frame, Slow or jerky sunroof opening/closing, Water dripping from interior light clusters
- Inspect headlining around sunroof for water stains or dampness
- Operate the sunroof fully open and closed to check speed and noise
- Check boot side wells for moisture or rust
Front Lower Suspension Arm Bush Wear
The ES is a heavy saloon, and the front lower suspension arm rear bushes can soften or tear over time, leading to vague steering feel, a dull thump over potholes, and inner-shoulder front tyre wear. This is a common MOT advisory on higher-mileage UK cars.
Dull clunk from front suspension on rough roads, Steering feels loose or wanders on motorways, Uneven inner-edge front tyre wear
- Drive over broken surfaces and listen for front-end knocks
- Inspect front tyres for feathering on inner shoulders
- Check suspension arm bushes for splits or oil leaks
Headlight Beam Pattern and Washer Faults
Headlight beam pattern failures and washer nozzle misalignment are common MOT advisories on the ES. The headlamp units can suffer from cloudy lenses or failing HID bulbs, while the washer jets can become clogged or misdirected, reducing cleaning effectiveness in winter salt conditions.
MOT advisory for headlamp beam pattern, Cloudy or yellowed headlamp lenses, Washer fluid missing the headlamp glass
- Inspect headlamp lenses for cloudiness or cracks
- Test headlamp washers and check nozzle direction
- Confirm beam alignment on a flat wall at night
Buying a used Lexus ES? Always check for hidden finance and write-off history.
Mechanical problems are only half the battle. Over 1 in 3 UK used cars checked have unpaid finance or accident write-off records that could cause you to lose the car or thousands in value.