Lexus GS 300 (2018-2020)

Model years

2018–2020

Coding modules

28

Codeable settings

727

Make-wide fault codes

667

CarCoding supports ECU coding and fault code reading for the Lexus GS 300 (2018-2020). It accesses 28 coding modules, 667 manufacturer fault code descriptions, and 727 codable settings. The app runs on iPhone, Android, and Windows and works with an ELM327 OBD2 adapter.

Settings you can change include Wireless Control Function, Panic Function (Wireless Door Lock), and Unlock Key Twice Function. Other examples are Trunk Lid Linked with Door Lock Function and Door Auto Lock Timer Setting (Door Lock).

Supported coding modules

The CarCoding coding database defines 28 modules and 727 settings for this platform. Open a module to see every setting it carries.

Grouped by category. Open a module to see every setting it exposes.

Body and comfort

• MAIN BODY ECU322 settingsComfort, Display, Lighting, Safety, climate
• A C AMPLIFIER HVAC56 settingsComfort, climate
• MAIN BODY ECU TAILGATE26 settingsComfort
• ENTRY START20 settingsComfort
• DRIVER SEAT14 settingsComfort
• DOOR RL PSD13 settingsComfort
• DOOR RR PSD13 settingsComfort
• MIRROR L4 settingsComfort
• MIRROR R4 settingsComfort
• PASSENGER SEAT2 settingsComfort
• POWER SOURCE CONTROL2 settingsComfort

Instrument cluster

• COMBINATION METER46 settingsDisplay, Safety
• HEAD UP DISPLAY12 settingsDisplay

Infotainment

• TELEMATICS DCM3 settingsComfort

Lighting

• HEADLIGHT CONTROL12 settingsLighting
• AUTO HIGH BEAM1 settingComfort

Safety and driver assistance

• CLEARANCE SONAR54 settingsComfort, Safety
• BLIND SPOT MONITOR49 settingsComfort, Safety
• FRONT CAMERA 216 settingsSafety
• PRE COLLISION 211 settingsComfort
• SEAT BELT CONTROL6 settingsComfort
• ITS CONNECT3 settingsSafety
• DRIVER MONITOR CAMERA1 settingSafety
• PRE COLLISION RADAR CRUISE 21 settingComfort
• VPNS AVAS1 settingComfort

Powertrain

• REMOTE ENGINE STARTER6 settingsComfort, climate
• AIR SUSPENSION3 settingsComfort

Gateway

• CENTRAL GATEWAY EXPAND26 settingsComfort

Fault codes for this make

There are 667 manufacturer fault code descriptions for Toyota · Lexus · Daihatsu · Perodua. Open a code block and read what your code means.

• P1245
• B1149
• C1121
• P347
• C242
• B232
• U115
• C012
• B04

Frequently asked questions

Which app can do ECU coding on the Lexus GS 300 (2018-2020)?

CarCoding does ECU coding on the Lexus GS 300 (2018-2020) (2018–2020) from your phone: 727 codeable settings are defined across 28 modules; example settings: Wireless Control Function, Wireless Buzzer Response Function, Panic Function (Wireless Door Lock), Wireless Tailgate Open Operation Adjust, Unlock Key Twice Function, Trunk Lid Linked with Door Lock Function. An ELM327-based OBD2 adapter with Bluetooth Low Energy (BLE) is all you need; the app runs on iPhone, Android and Windows and is free to download.

Can I read fault codes on the Lexus GS 300 (2018-2020)?

Yes. Besides standard OBD2 engine codes there are 667 manufacturer fault code descriptions for this make group; you can read and clear them.

Which adapter do I need?

An ELM327-based OBD2 adapter with Bluetooth Low Energy (BLE) is all you need; the app runs on iPhone, Android and Windows and is free to download.

How do I start?

1. Plug an ELM327-compatible OBD2 adapter into the car.
2. Open CarCoding and connect to the adapter over Bluetooth.
3. Pick the make and model — or let the VIN identify it.
4. Read fault codes; on supported vehicles, open the module settings.

Related pages

• Lexus — Supported Vehicles
• All ECU modules
• All fault codes