> For the complete documentation index, see [llms.txt](https://evoffer.gitbook.io/evoffer-installation-guide/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://evoffer.gitbook.io/evoffer-installation-guide/liftgate-system/model-s-electric-tailgate/mark-3.md).

# Electric Tailgate MARK 3

{% embed url="<https://evoffer.com/product/model-s-electric-tailgate/>" %}

## Feature

| Touch Screen | Tesla Official App | Button | Key Fob    |
| ------------ | ------------------ | ------ | ---------- |
| Open         | Open/Close         | Close  | Open/Close |

## Settings

### Height Setting (Initialization)

Adjust the liftgate to your desired height. Press and hold the button on the control unit for about 5 seconds, until you hear a beep.

### Speed Setting

When the liftgate is in open state, press and hold the button on the control unit. You will eventually hear two long beeps (speed 2), three long beeps (speed 3), four long beeps (speed 4), up to six long beeps (speed 6). Release the button after you hear the speed you want to set. The slowest speed is speed 2 and the highest speed is speed 6. The factory default is at speed 4.&#x20;

## Packing List

1. Strut x 2
2. ECU (Electric control unit) x 1
3. Latch Motor x 1
4. Power connector x 1
5. Power and ground wire x 1
6. Strut extension wire x 2
7. Signal Wire x 1

## Tools

1. 8mm Hex Socket
2. T-20 Screwdriver
3. T-30 Screwdriver
4. Small Flat Head Screwdriver
5. Fishing Tape

## Installation

### Step 1 - Removing trunk lid panels

First, remove the cup holders on the trunk lid panel.

<div><figure><img src="/files/Q0vYAVUGpL1EnVbCjEY5" alt=""><figcaption></figcaption></figure> <figure><img src="/files/Peit8tuj90jIQtVSguq1" alt=""><figcaption></figcaption></figure></div>

Remove the 3 trim pieces as shown in the following photo.

<figure><img src="/files/UobX42LsjqSDp2ipGZys" alt="" width="375"><figcaption></figcaption></figure>

Unscrew the 2 T-20 screws on both sides of the trunk lid cover.

<figure><img src="/files/1MQKiRHIAn4o9MUBlsT6" alt="" width="375"><figcaption></figcaption></figure>

Gently take off the trunk lid cover. There are 1-4 connectors for speakers and LED light, depending your model year and audio options. Disconnect all of them in order to take out the cover.

<div><figure><img src="/files/a7Wsy5iwIADFvWV6EGCN" alt=""><figcaption></figcaption></figure> <figure><img src="/files/TGMLHZD6uX7yO7POY0Pe" alt=""><figcaption></figcaption></figure></div>

### Step 2 - Remove and replace the strut

Use a flat head screw driver and insert into the channel on the strut. With one hand holding the trunk lid, jiggle the strut and take it off.

<figure><img src="/files/tz7dv0Nb5wBwTX3OTf3I" alt="" width="375"><figcaption></figcaption></figure>

Use the same way to disconnect the ball joint from the body of the car.

<figure><img src="/files/4DSjgDLZKyBoXX3qivaP" alt="" width="375"><figcaption></figcaption></figure>

Install the new electric struts on both sides.

<figure><img src="/files/Gq8R8zzB45QKXuwxbt0u" alt="" width="375"><figcaption></figcaption></figure>

### Step 3 - Remove and replace the latch

Remove the plastic trim covers from the trunk cargo space.

<div><figure><img src="https://aws.alpharexusa.com/wp-content/uploads/20240530211325/DSC03675-scaled.jpg" alt="" width="375"><figcaption></figcaption></figure> <figure><img src="/files/2gDCbLoWAv7s6ggozOyu" alt="" width="375"><figcaption></figcaption></figure></div>

Remove the screws on both sides of the trunk cargo plastic cover panels.

<figure><img src="https://aws.alpharexusa.com/wp-content/uploads/20240530211347/DSC03642-scaled.jpg" alt="" width="375"><figcaption></figcaption></figure>

### Step 4 - Connect the signal wire

### Step 5 - Connect power and ground

### Step 6 - Run the wires to the trunk lid

### Step 7 - Install the ECU and test the system

### Step 8 - Finishing Up

Tidy up all wires and trim pieces, install them in reverse procedures. Now test the opening and closing, see if they are working properly.