top of page

How To Guide:

Source: X431Shop

LAUNCH How to Connect and Diagnose Tesla with Launch X431 EV Diagnostic Kit

Just a Heads-Up: This guide is here to help you out, but it’s for general info only. We try to keep everything accurate and reliable, but we can’t promise it’s perfect. So, if you decide to follow this guide, you’re doing it at your own risk.  We’re not responsible for any loss or damage that might happen, including indirect or consequential loss, or any loss of data or profits from using this guide.  Sometimes, we might link to other websites. We don’t control those sites, so we can’t vouch for their content. Just because we link to them doesn’t mean we endorse them.  We do our best to keep this guide running smoothly, but we can’t be held responsible if it’s temporarily unavailable due to technical issues beyond our control.

The Launch X431 series tools support the diagnosis of EV vehicles, including Tesla vehicles. To diagnose new energy vehicles, you need to purchase additional accessories and software. This article will take Tesla as an example to introduce how to use the Launch X431 EV Diagnostic Kit to connect and diagnose EV vehicles.


To use these adapters you should have Tesla software activated on your Launch X431 scanners.


Contact us for more information on the software required.


The software for "TESLA" is compatible with LAUNCH X431 PAD VII, PAD V, PAD II, X431 V 8inch, X431 V+, X431 Pro5, Pros V1.0, Pros V5.0, Pro3s+ etc)


1. Launch Tesla 12+20 Connector

The Tesla 12+20 adapter is included in the Launch X431 EV kit


The connector can be used on Model S and Model X vehicles.


Function:


Basic Function including ECU Information, Live Data, Read/ Erase Codes, as well as Special Functions including BMS Reset Alert, BMS Clear Contactor Stress Index, EPB Service Mode, Brake Bleed etc for Model X and Model S.


Check vehicle and function coverage here http://qcar.x431.com/qcar/#/


Wiring diagram:


1.12 PIN connector: (located below the central control screen) for diagnostics of pre-2015/Sept Model S and Model X


2. 20PIN connector: (located below the central control screen) for diagnostics of post-2015/Sept Model S and Model X


2.Tesla Airbag Reset Adapter

The Tesla airbag repair dedicated connector is mainly used to reset the airbag crash data.


1). Model X airbag control module pinout

+12V: 12V Power


GND: Ground


CAN_H: CAN High


CAN_L: CAN LOW



Model X Tesla airbag connector connection diagram:

2). Model S airbag control module pinout

PW: Jump wire, short the two positions to enable it to write EEPROM;


+12V: 12V Power


GND: Ground


CAN_H: CAN High


CAN_L: CAN LOW




Model S Tesla airbag connector connection diagram:


Example:


How to Reset Tesla Model S Airbag Crash Data with Launch X431?

3). Model 3 airbag control module pinout

Model 3 Tesla airbag connector connection diagram:

4). Model 3/Y Airbag Unlock Wiring Diagram


3. Tesla 3 Battery Test Cable 152, RoHS


The cable is included in the Launch X431 EV kit


This test cable is used to test the data flow of the three-electric system and test battery pack of Model 3 and Model Y models.


The EV kit is compatible with PAD V and PAD VII only at present.


4. Launch X431 New Energy LAN network port diagnostic connector



Used in local area network (LAN) function (car enters maintenance mode), currently supported products: X-431 PAD V, PAD VII series, EV MAX, X431 PRO 3S+ V3.0/V5.0 diagnostic equipment, Simplified Chinese, Traditional Chinese, Japanese, Korean, Arabic and Russian software.


Wiring diagrams:

1). 2018 onwards Model 3/Model Y


2). 2022 onwards Model S/Model X


3). 2018-2021 Model S/Model X

4). 2014-2018 Model S/X Tegra chip MCU


bottom of page