These instructions apply to the Lexus IS Mk3 (XE30) 2013-2020.
For other models, please choose your vehicle here.
The Lexus IS (XE30, 2013–2020) hides a combination-meter test mode in its instrument cluster — a factory self-check you can run yourself with no scan tool. It sweeps the gauge needles through their full travel, lights every LCD and multi-information segment, and cycles the warning lamps, so you can confirm the cluster hardware is healthy before assuming a gauge or the display has failed.
What the hidden meter test mode does
Lexus, like its Toyota parent, calls this the combination-meter “operation check”. When entered, the analogue tachometer and speedometer needles drive from their rest stops to full scale and back. Every LCD segment lights, the multi-information display panels flood, and the warning icons cycle on together to expose a dead LED. It is the fastest no-tool way to tell a genuine gauge or sensor fault apart from a simple display failure on the XE30 IS, including the moving-ring centre dial fitted to F SPORT trims.
Every XE30 IS uses Smart Access push-button start, so IGNITION ON is reached with the ENGINE START STOP button rather than a key.
How to enter the test mode
- Sit in the car fully switched off, with your foot OFF the brake pedal, and the meter showing the odometer rather than a trip reading.
- Press and hold the trip/display reset switch — the control you normally use to step through ODO, TRIP A and TRIP B.
- Keeping it held, press ENGINE START STOP twice without touching the brake. The first press gives accessory mode, the second reaches IGNITION ON — the warning-light state with the engine off.
- Hold the reset switch for another second or two as the cluster powers up, then release it.
The cluster runs its self-test: the needles sweep to maximum and return, the LCD and information display flood every segment, and the warning symbols cycle. A pointer that stalls, a blank patch on the screen or a lamp that never lights marks the part that needs attention.
How to exit
Press ENGINE START STOP once to switch everything off. The cluster returns to normal at the next ignition-ON and keeps no record of the test. It alters no settings, resets no trip totals and touches no service counter.
Frequently Asked Questions
Does it work on the IS 300h hybrid? Yes. The 300h shares the XE30 cluster; its hybrid-system power gauge sweeps in place of the rev counter during the test.
My F SPORT has the sliding-ring TFT centre dial — does the test still run? Yes. The moving meter ring slides to its limits and the rendered gauge sweeps as part of the same self-check; the digital area also runs its pixel flood.
Will this clear a maintenance reminder or fault codes? No. It only exercises the display. The service-reminder reset is separate, and reading or clearing trouble codes needs an OBD-II scanner on the port under the dash.
Why press START twice with no brake? Without the brake the button steps through ignition modes instead of starting the car; two presses lands on IGNITION ON, exactly what the test requires.
Can running the test harm the cluster or engine? No. The car stays in ignition-ON only, the engine never cranks, and the meter test is a designed-in factory diagnostic.
If the self-test surfaces a real warning instead of a dead segment, decode the trouble code at autodtcs.com before arranging any repair.
Independent guide — not affiliated with Lexus. Always follow your official service manual and safety precautions. Read our full disclaimer.