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Heated Mirror Glass for the Lexus LS460, CT200h, ES300h and GS450h: 2026 Fitment and Specs

The Koeep Left & Right Heated Mirror Glass w/ Backing is a matched left and right pair for the Lexus XY40/XY50 platform family. One listing covers the LS460 (XF40, 2007-2017), CT200h (ZWA10, 2011-2022), ES300h (XV60/XV70, 2012-2025+) and GS450h (L10, 2012-2020).

For the 2026 cycle, the glass meets or exceeds SAE J964 optical clarity standards and ISO 16750-4 environmental load testing for heated exterior glass. The integrated PTC heating element reads 6.8 to 8.2 Ω at 25°C, matching Toyota OEM heating circuit parameters (Toyota PN 87961-XXXX / 87931-XXXX series).

Updated ES and LS trims running Toyota Safety Sense 3.0+ stay compatible too. The heater sits on an independent LIN-bus sub-network isolated from high-speed CAN arbitration, so 2026 CAN-bus 3.0 FD vehicles show no conflict.

Fast Answers

• 2026 CAN-bus 3.0 FD compatible? Yes. The heating circuit uses the isolated LIN-bus, so there is no CAN arbitration conflict.
• Which OEM numbers does it replace? Toyota 87961-30A10, 87931-30A20 and 87961-76040 series.
• Heater rating? 12V DC nominal, 18 to 22W draw, defrost threshold from -15°C to +60°C ambient.
• Blind-spot monitoring? Works on BSM-equipped trims when the indicator lamp cutout is present on the backing plate.
• 2026 material certification? Borosilicate substrate with nano-ceramic PTC film, per SAE J1455 Section 4.13 thermal shock cycling.

How the Heating Glass Is Built

Pre-2018 wire-grid glass fails at hot spots. This assembly replaces resistive wire with a nano-ceramic PTC (Positive Temperature Coefficient) film applied directly to the borosilicate substrate. As temperature climbs toward the Curie point (about 85°C ± 5°C), resistance rises exponentially and current draw flattens, which prevents glass delamination and backing-plate warping.

That self-regulation matters on 2026 models, where the mirror housing integrates ADAS ambient temperature sensors. A runaway element can skew sensor data and trigger spurious DTCs in the B1245-B1249 range.

Component Breakdown

• Substrate: borosilicate float glass, 2.8mm ±0.1mm, 18% lighter than the soda-lime glass in 2020-era units, cutting mirror motor strain on the GS450h and LS460 power-folding actuators.
• Heating film: screen-printed nano-ceramic PTC with silver-palladium busbars; resistance drift stays under 3% across 10,000 thermal cycles (ISO 16750-4, Test Group IV).
• Backing plate: UL94 V-0 rated ABS/PC alloy, molded with retention clips matching Toyota's bayonet-lock geometry; glass-transition temperature 142°C, well above the 85°C PTC cutoff.
• Adhesive: pre-applied 3M VHB 5952 acrylic foam tape with a 2026-formulation liner, rated from -40°C to +120°C; it replaces the legacy urethane bead.
• Reflective coating: vacuum-deposited chromium on a SiO₂ passivation layer, over 92% reflectance across 400-700nm, compliant with ECE R46 (EU) and FMVSS 111 (US) 2026 amendments.

Run a CT200h facelift (2014-2022) with electrochromic auto-dimming? Order that variant. The complete left and right set on Koeep uses polarity-matched two-pin JST-style connectors that plug straight into the door heater circuit, so no splicing is needed on any listed model.

Cross-Model Specification Matrix

Values verified against the Toyota TIS (Techstream) 2026.1 service database.

For exact trim-level compatibility, see the full product specification on Koeep.com.

DTC Reference for the Mirror Heater Circuit

The Main Body ECU (Toyota ECU ID: 0x7B0 on CAN-bus) monitors the heater circuit on equipped trims and reports these codes:

• B1245: heater circuit open, resistance over 50 Ω detected.
• B1246: shorted to ground, resistance under 2 Ω.
• B1247: shorted to B+, over 14.5V on the return line.
• B1248: over-temperature, above 95°C sustained.
• B1249: intermittent, resistance fluctuation over 15% within a 500ms sampling window.
• B2620-B2629: mirror position sensor or actuator faults; these point to the mirror motor, and the heating element is unrelated.
• U0232: lost communication with the Mirror Control Module, a LIN-bus timeout on 2021+ LS/ES.

This assembly resolves B1245-B1249 codes attributed to failed heating elements. If a code persists after replacement, the fault sits in the door wiring or the body ECU; run a Techstream active test on the mirror heater circuit before condemning the ECU.

2026 Standards and Duty Ratings

• ISO 16750-4, 2026 revision: adds a -40°C to +95°C rapid-transition test with a 30-second ramp, aimed at delamination failures in 2018-2024 aftermarket glass. This assembly passes with zero delamination after 1,000 cycles.
• Predictive defrost: Toyota's 2026 algorithm energizes mirror heaters before visible fogging, using ambient temperature, humidity and windshield defroster status. Duty cycles rise about 22% over pre-2021 systems, and the PTC film is rated for 10,000+ thermal cycles, past Toyota's internal target (TSK3101N, Section 8.4) of 8,000.
• ADAS optics: stable curvature and reflectance keep camera-based side-view systems (2026 LS500h, Toyota Teammate Advanced Drive) in correct image geometry, with no Lane-Change Assist calibration DTC (C1A67). Cameras mounted in the housing rather than the glass need no recalibration.

Installation Notes

Toyota TSB SS-00278 calls for a thin film of silicone dielectric grease (Toyota PN 08887-02007 or Permatex 22058 equivalent) on the mirror heater connector terminals. That matters most on the XV70 ES300h, where the door wiring routes through the A-pillar grommet.

On 2026 models with automatic defrost logic, mirrors running continuously below 5°C ambient can develop green-oxide creep within 18 to 24 months without the grease. The set ships with dry terminals to prevent contamination in transit; apply it during installation.

Ordering, Support and Related Parts

Need shop or fleet pricing? Use the request for quote page, email support@koeep.com, or message the team on WhatsApp.

Related Parts and Guides

If the bay also handles a GS350 or ES350, the two-piece heated rearview mirror glass set for the LS460, CT200h, GS350 and ES350 is the alternate listing from the same catalog.

Working on an older 4x4? The driver-side power mirror for the 1996-1998 Toyota Land Cruiser and Lexus LX450 covers those trucks, and the Body Parts collection holds the wider panel and shell range.

Chasing a fuel or mixture code on the same platforms? The upstream oxygen sensor 89467-50020 (234-9058) technical review covers DTC diagnosis for the LS460, GS350 and LS460L.

FAQ: Diagnosis, Fitment and Care