What each repair involves on the IS, when to inspect or replace, and what our invoices say it costs
The figures are from our invoices. Scheduled maintenance follows the requirements for your car's engine, gearbox and model year; other repairs are assessed from symptoms, inspection and diagnostic results rather than a universal age or mileage. The notes under each repair are general guidance for cars driven in Singapore, not statistics.
Gearbox oil changes on the Lexus IS
This is among the repair work our IS invoices record most often. On the bill, this item typically came to about $150 (middle half $150 to $200, GST included; other work on the same bill is not counted).
Gearbox oil lubricates moving parts, carries heat away and helps the hydraulic controls engage each gear. You may notice hesitant shifts, shuddering or unusual transmission noise when the fluid is degraded or low. Leaving poor fluid or a leak unchecked can accelerate internal wear and turn maintenance into a larger repair.
We road-test the shift behaviour, inspect the fluid condition and check for leaks before deciding whether an oil change is suitable or deeper fault tracing is needed. You see the documented findings and an honest quote before work starts.
Service interval: Follow the interval and fluid specification for your gearbox and model year; they differ between gearbox types even within one model, and we confirm them for your car. Where the maker lists no change for the life of the car, ask us whether a preventive change makes sense for your gearbox and driving.
Maintenance and early warning signs: Use the specified fluid and fill procedure, with the filter where your gearbox has a serviceable one, and avoid hard launches while the gearbox is cold. Fresh fluid is maintenance, not a cure for a gearbox that is already faulty. Early signs: a burnt smell, dark fluid, shifts that have become rough.
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Oil leak repairs on the Lexus IS
This is among the repair work our IS invoices record most often. On the bill, this item typically came to about $150 (middle half $100 to $250, GST included; other work on the same bill is not counted).
Engine oil protects moving parts and carries heat away from them. A leak may leave spots under the car, create a burning smell or trigger a low-level warning. Waiting can let the oil level fall and contaminate nearby belts, hoses or electrical parts, increasing the repair scope.
We clean the affected area and trace the leak from the highest wet point to identify the failed gasket, seal, cover or housing. We show you the source and quote for that repair before touching the car.
When to inspect or replace: Checked at every service and repaired according to the source and severity found, from a weeping seal to a housing. No age makes a leak due.
Maintenance and early warning signs: Change the oil on time to the maker's specification, and fix small weeps before they reach belts, mountings and electrical parts. Early signs: drips under the car, a burning smell after driving, a falling oil level.
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Battery replacement on the Lexus IS
This is among the repair work our IS invoices record most often. On the bill, this item typically came to about $200 (GST included; other work on the same bill is not counted).
The battery supplies the power needed to start the engine and keeps the electrical system stable. Slow cranking, dim lights and warning messages can point to a weak battery or a charging fault. Ignoring those signs can strain other starting components or leave the car unable to restart.
We run a battery load test and a charging-system test to separate battery failure from an alternator or connection problem. The readings are recorded, and you receive a clear quote before replacement is approved.
When to inspect or replace: The starter battery is tested at every service and replaced on the test result rather than at a set age. Cars with a separate auxiliary battery for the stop-start system or the electronics have that battery tested and replaced the same way, and it is counted in this row. Hybrid drive batteries are a separate matter.
Maintenance and early warning signs: Short trips and daily aircon use are hard on a battery in Singapore; give the car a longer run where you can, switch accessories off before the engine, and park in shade. Early signs: slow cranking, lights dimming at idle, stop-start no longer working, a warning about the auxiliary battery, electrical warnings that come and go.
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Spark plug and ignition coil work on the Lexus IS
This is among the repair work our IS invoices record most often. On the bill, this item typically came to about $200 (middle half $200 to $300, GST included; other work on the same bill is not counted).
Spark plugs ignite the fuel mixture, while ignition coils provide the high voltage they need. Failure can cause rough idling, hesitation, loss of power or an engine warning light. Continued misfiring can damage the exhaust catalyst and increase fuel use.
We connect specialist diagnostic tools to scan fault codes, review live misfire data and inspect the plugs and coils. We document the evidence, recommend only the failed items and confirm the quote before work begins.
Service interval: Spark plugs have a scheduled interval that depends on the engine and plug type, and we confirm it for your car. Ignition coils are replaced on diagnosis, not on a schedule, and a misfire does not by itself mean a coil has failed.
Maintenance and early warning signs: Keep to the plug interval and have misfires checked early, because unburnt fuel can damage the catalytic converter. Early signs: rough idle, hesitation, a flashing engine light.
Engine and gearbox mounting repairs on the Lexus IS
This is among the repair work our IS invoices record most often. On the bill, this item typically came to about $550 (middle half $500 to $650, GST included; other work on the same bill is not counted).
Mountings hold the engine and gearbox in position while isolating vibration from the cabin. Wear can show up as shaking at idle, a thump during acceleration or excess movement when drive is engaged. Delaying repair can place extra strain on hoses, exhaust joints and nearby drivetrain parts.
We combine a road test with a mounting inspection and check powertrain movement under load. We identify the failed mount rather than replacing the full set without evidence, then share our findings and quote before proceeding.
When to inspect or replace: Mountings are inspected under load and replaced when a mount is confirmed split, collapsed or leaking. Vibration alone is not a diagnosis, because a misfire feels similar.
Maintenance and early warning signs: Accelerate and brake smoothly, especially between traffic lights, do not snap the car into gear at high revs, and fix oil leaks that soften the rubber. Early signs: a clunk when selecting drive, shake at idle, engine movement under load.
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Cooling system repairs on the Lexus IS
This is among the repair work our IS invoices record most often. On the bill, this item typically came to about $600 (middle half $500 to $1,000, GST included; other work on the same bill is not counted).
The water pump, thermostat, radiator and hoses control coolant flow and engine temperature. A warning light, puddle, sweet smell, strong fan noise or rising temperature can signal a circulation problem or leak. Continuing to drive can cause overheating and serious engine damage.
We pressure-test the cooling system, use dye where needed and inspect the pump, thermostat, radiator and connections for the source. We photograph the fault, recommend the affected part and provide an honest quote before repairs start.
When to inspect or replace: Water pumps, thermostats, radiators and hoses are inspected and pressure-tested and replaced when a fault is confirmed; some engines also list a scheduled water-pump replacement, which we check for your car. Coolant itself is changed on the maker's schedule for your engine.
Maintenance and early warning signs: Top up only with the specified coolant, and stop as soon as a temperature warning appears. Early signs: a sweet smell, a coolant level that keeps dropping, a wet patch, a temperature gauge climbing in traffic.
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The repair shown can move up or down depending on the exact failed part, access required, related damage and parts selected. A statistic from past invoices is useful guidance, but it is not a quote for your Lexus IS. We inspect the car and confirm the price before work starts.
