Lexus Ls400 Service Costs & Schedule (2026)

Lexus Ls400 service: key facts

Oil service every 10,000 miles or 1 year
Basic service costs £80–£250 depending on garage
Timing belt and tensioner: £600–£800 — don't skip this one
2 generations from 1990 to 2000
9 tracked service items across routine, major, and periodic schedules

Routine service items

These are the items covered in a standard service. Most garages include oil, oil filter and a basic inspection. The rest are typically checked or replaced on a schedule.

Service item	Interval	Typical cost
Engine oil and filter Lexus specifies 10,000 miles or 12 months. UCF10, UCF20	10,000 miles or 1 year	£80–£120 Dealer: £180–£250
Air filter Replace more frequently in dusty conditions. Dirty filter affects engine breathing and emissions. Simple replacement accessible from engine bay. UCF10, UCF20	20,000 miles or 2 years	£40–£60 Dealer: £80–£120
Cabin pollen filter Located behind glove compartment. Blocked filter reduces air conditioning efficiency and causes cabin odours. Simple DIY replacement possible. UCF10, UCF20	20,000 miles or 2 years	£40–£60 Dealer: £80–£120

Major service items

These are the big-ticket items. Miss them and you risk engine or gearbox damage. The costs are higher but the consequences of skipping are much worse.

Service item	Interval	Typical cost
Timing belt and tensioner Critical interference engine - belt failure destroys valves and pistons. UCF10, UCF20	60,000 miles or 5 years	£600–£800 Dealer: £1200–£1600
Automatic transmission fluid Lexus claims lifetime fluid but specialists strongly recommend 100k mile changes. UCF10, UCF20	100,000 miles or 10 years	£200–£300 Dealer: £350–£500

Has this Lexus Ls400 been serviced on schedule?

Check the dealer service records to see if the work above was actually done.

£6.99 · Full refund if no records found

Periodic maintenance

Items that don't need doing at every service but should be on your radar at the right mileage or age.

Service item	Interval	Typical cost
Spark plugs Platinum plugs specified by Lexus. Access requires intake plenum removal on some variants. Worn plugs affect emissions compliance and can cause rough idle. Change all eight together. UCF10, UCF20	30,000 miles or 3 years	£200–£300 Dealer: £300–£450
Brake fluid Critical safety item. Brake fluid absorbs moisture and loses effectiveness. Two-year interval regardless of mileage. Use DOT 3 or DOT 4 as specified. Include full system bleed and reservoir cleaning. UCF10, UCF20	2 years	£80–£120 Dealer: £150–£200
Coolant flush Long-life coolant specified. Flush includes radiator, engine block, and heater matrix. Old coolant can cause radiator and water pump corrosion. Use Toyota Super Long Life Coolant or equivalent. UCF10, UCF20	100,000 miles or 10 years	£120–£180 Dealer: £200–£300
Power steering fluid Not specified by manufacturer but specialists recommend regular changes due to documented pump and rack failures on this model. UCF10, UCF20	40,000 miles or 4 years	£80–£120 Dealer: £150–£200

Known issues to watch for

The most common problems reported on the Lexus Ls400, ranked by severity.

dangerous

Vehicle structure corrosion reducing assembly rigidity

The LS400 suffers from significant structural corrosion that reduces the rigidity of the vehicle assembly, particularly around suspension mounting points and the rear subframe area.

dangerous

Suspension mounting point corrosion

Corrosion around suspension mounting points represents a critical safety issue on the LS400, with the load-bearing structure within 30cm of suspension component mountings deteriorating significantly above fleet average rates.

major

Power steering system fluid leaks and pump failure

The LS400 has a documented pattern of power steering system failures, with the hydraulic pump and associated seals failing at significantly higher rates than the fleet average.

major

Suspension bushes and joint excessive wear

The LS400 suffers from accelerated wear of suspension bushes and joints, failing at 7.6 times the fleet average rate.

1 more known issues tracked. Check a specific Lexus Ls400's service records — a missed service on one of these issues could mean an expensive surprise.

Buying a used Lexus Ls400? Check its service history first.

A Ls400 with a patchy service history can cost you thousands in missed timing belts, skipped oil changes, and hidden neglect. We pull the franchised dealer records — every visit, every stamp, every mileage reading — so you can see exactly what's been done and what's been skipped.

£6.99 · No records found = full refund, zero risk

Lexus Ls400 service FAQs

How often does a Lexus Ls400 need servicing?

A Lexus Ls400 needs servicing every 10,000 miles or 1 year, whichever comes first. Lexus specifies 10,000 miles or 12 months.

What does a Lexus Ls400 service cost?

A basic service at an independent garage costs £80–£120. Main dealer servicing runs £180–£250. Major items like timing belts or gearbox services cost significantly more. Independent garages are typically 30 to 50% cheaper for the same work.

Is a Lexus Ls400 expensive to maintain?

Routine servicing starts from £80 at an independent garage, which is about average for this class of car. The bigger costs come from periodic items like timing belts, brake fluid changes, and transmission servicing. Keeping on top of the schedule avoids expensive failures.

How do I check a Lexus Ls400's service history?

You can check any Lexus Ls400's official dealer service records online using just the registration number. The check retrieves every logged dealer visit, including dates, mileage, and work done, so you can see whether the schedule has been followed or if there are gaps. It costs £6.99 and you get a full refund if no records are found.

Lexus Ls400 Service Costs & Schedule