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
|
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
|
Check a Lexus Ls400's service history
Enter a reg to see franchised dealer service records — dates, mileage, and work done at every visit.
Check service history£6.99 · Full refund if no records found
Related
Lexus Ls400 service FAQs
How often should a Lexus Ls400 be serviced?
A Lexus Ls400 should have an oil service every 10,000 miles or 1 year, whichever comes first. Lexus specifies 10,000 miles or 12 months.
How much does a Lexus Ls400 service cost?
A basic service at an independent garage typically costs £80–£120. Main dealer servicing is usually £180–£250. Major items like timing belts or gearbox services cost significantly more.
Can I service a Lexus Ls400 at an independent garage?
Yes. Under UK consumer law, using an independent garage does not void your manufacturer warranty, provided they use parts meeting the manufacturer's specification and follow the correct schedule. However, independent services won't appear in the franchised dealer digital records.