Parts for your 2016 Toyota Mark x-Tail lights

2016 Toyota Mark X tail-lights

Tail-lights are absolutely fitted to the 2016 Toyota Mark X. Technical sources including the Toyota Mark X Owner’s Manual (2016 JDM edition), the Toyota Electronic Parts Catalogue for the GRX130/133/135 series (listing “Rear Combination Lamp Assembly LH/RH”), and lighting regulations used in export markets (UNECE R48 and Australian Design Rule 13/00 for rear position lamps) all confirm the vehicle uses rear combination lamps — typically LED tails with integrated stop and indicator functions. So tail-lights are relevant, required, and part of every 2016 Mark X.

On a 2016 Mark X, the tail-lights do more than just glow red at night — they’re a key safety feature that makes the car visible from behind, marks out its width, and signals braking and turns. The facelifted GRX130 series commonly uses LED rear combination lamps for the tail and stop functions, delivering crisp light, fast response, and long service life. Indicators and reverse lights may be LED or incandescent depending on trim and market, but the assemblies are designed as complete left/right units, sealed against the weather.

As part of regular servicing, a quick lighting check is smart and takes seconds. With the park lamps on, confirm both tails are evenly bright and the colour is consistent. Press the brake, operate indicators and hazard lights, and pop it into reverse (with the park brake applied) to confirm all functions. If one side is dim, flickering, or out, the issue could be a blown globe (if fitted), a failed LED segment, moisture in the lens, a dirty earth, or a damaged connector.

• Common watch-outs: condensation inside the lens, cracked housings, damaged gaskets, corroded plugs, and blown fuses.
• Simple fixes: clean the connector pins, replace perished gaskets, and reseat the harness. For LED failures, the assembly usually needs replacement.
• Service interval tip: test the lights at every fuel fill or before WOF/RWC checks.

1. Open the boot and remove the trim clips to access the lamp mounting area.
2. Unplug the harness, for globe types, twist to remove the bulb holder. For LED assemblies, remove the lamp retaining nuts.
3. Lift out the assembly carefully to avoid scuffing the paint. Swap the gasket if supplied.
4. Install the new unit, seating the locator pins. Tighten the nuts to light, even torque (do not overtighten), reconnect, and test all functions.

Choosing genuine or high-quality ADR/UNECE-compliant replacements keeps light output and beam pattern correct, avoids dash warnings or hyperflash, and ensures the Mark X looks the part. If moisture returns after resealing, replace the lamp — persistent fogging can shorten LED life and dull output.

Popular questions

Are the 2016 Toyota Mark X tail-lights LED or replaceable bulbs?
Many 2016 Mark X variants run LED tails and stops within a sealed rear combination lamp. Some trims may still use replaceable globes for indicators or reverse. If the tail function is LED, individual bulbs can’t be swapped — the assembly or LED board is replaced as a unit.

Do the tail-lights need coding after replacement?
No special coding is typically required on the Mark X. If the replacement is genuine or a quality equivalent, it should plug in and work. If switching to aftermarket LEDs for indicators, a suitable flasher relay or resistors may be needed to stop hyperflash.

How do they fix condensation in a Mark X tail-light?
Minor misting after rain can clear on its own. Persistent droplets suggest a compromised seal or a cracked lens. Check the gasket and vents, dry the housing off the car, and reseal with a new gasket. If water keeps returning or LEDs are affected, replace the assembly.