---
product_id: 51353777
title: "Compustar CS4900-S (4900S) 2-Way Remote Start and Keyless Entry System with 3000-ft Range"
brand: "compustar"
price: "¥48343"
currency: JPY
in_stock: true
reviews_count: 10
category: "Compustar"
url: https://www.desertcart.jp/products/51353777-compustar-cs4900-s-4900s-2-way-remote-start-and-keyless
store_origin: JP
region: Japan
---

# 3000-ft remote range 2 high-quality 4-button remotes Diesel-safe, automatic transmission only Compustar CS4900-S (4900S) 2-Way Remote Start and Keyless Entry System with 3000-ft Range

**Brand:** compustar
**Price:** ¥48343
**Availability:** ✅ In Stock

## Summary

> 🚗💨 Start smart, arrive cooler—remote control redefined.

## Quick Answers

- **What is this?** Compustar CS4900-S (4900S) 2-Way Remote Start and Keyless Entry System with 3000-ft Range by compustar
- **How much does it cost?** ¥48343 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/51353777-compustar-cs4900-s-4900s-2-way-remote-start-and-keyless)

## Best For

- compustar enthusiasts

## Why This Product

- Trusted compustar brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Dual 4-Button Remotes:** Lock, unlock, trunk release, and remote start/stop—all at your fingertips with premium tactile feedback.
- • **Unmatched 3000-ft Range:** Control your vehicle from a distance that beats the competition—comfort starts before you step outside.
- • **Customizable & Programmable:** Tailor remote start duration and system attributes via remote keypad—because your convenience deserves personalization.
- • **Professional-Grade Security & Convenience:** Elevate your vehicle’s security with keyless entry and remote start, backed by a trusted brand and robust installation support.
- • **Diesel-Engine Safe & Automatic Transmission Optimized:** Engineered specifically for automatic transmissions and diesel engines, ensuring flawless compatibility and safety.

## Overview

The Compustar CS4900-S is a professional-grade 2-way remote start and keyless entry system boasting an impressive 3000-ft operational range. Designed exclusively for automatic transmissions and diesel engines, it includes two premium 4-button remotes that provide lock, unlock, trunk release, and remote start/stop functions. With programmable features and reliable security enhancements, this system offers millennial professionals a seamless blend of convenience, safety, and tech-savvy control—making every drive effortlessly ahead of the curve.

## Description

Buy Compustar CS4900-S (4900S) 2-Way Remote Start and Keyless Entry System with 3000-ft Range: Alarm Systems - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Compustar CS4900-S is an awesome remote start and keyless entry system! - This is the second unit I have bought and have installed on both my truck and Jeep. The system is very responsive and the remotes feel quality and work very well. Each system's installation was simple and straightforward, and the wiring in the instructions is very clear. I highly recommend!
Review: Locks may require relays. - Used to replace a burned out bull dog system, motherboard. Installing this system was simple until the door locks portion. Prior system controlled the door locks without relays, this one not so. Vehicle installed in; 1995 dodge ram automatic 5.9 liter. Had electric door locks built in and triggered with negative current which with this unit requires two 5 pin relays. You'll be wiring two posts each to hot, one on each to vehicel existing lock and unlock wires, and to same coming from remote box. No posts go to ground. You have to test which end of the vehicles lock and unlock wire is going to the motor or coming from the switch after you cut the vehicle wires one being lock and the other unlock - you have 4 wire ends you tie into using the relay posts producing 4 wires and they need to connect to right existing lock and unlock ends and you determine the ends by using your vehicle lock switch to identify; hot = switch side, other by default is the actuator side. Then you can finish the wire connections. I went to manufacturer’s web site, training for installers and found a specific video instruction re: locks and relays-the instructor speaks the wiring pin to relay numbers arrangement. Takes notes and apply. Manufacturer sells a dual relay wiring harness or just buy two 5 pin. 4 pin won't work - 87a post is needed and 4 post doesn't provide. The rpm sensor i left in the default mode which is alternator or voltage sense instead of rpm coil sensor. Just wire sensor wire to relay hot wire source as it’s direct to battery and fused of course. As soon as it starts the rpm sensor which is intended to issue a signal back to the brains that the engine started is instead using the alternator sensor for volt signal increase. The remote will issue a confirmation tone that your vehicle didn't start so it kept the starter turning til it toasted out, caught fire and burned your vehicle to the ground....kidding of course but that could happen if there’s no signal to identify engines running, so wire that sensor, use the power relay source and fuse protect it. The burn to the ground wouldn’t happen, there’s a time out starter engagement limit so relax ladies and why are you reading this install review, he’s installing it. Lots of mod options to change attributes that you can program via remote key pad. Remote start is great, antenna pick up is great; hit the button, listen for confirmation, go back to bed for 15 or longer (programmable). If keyless is backwards as mine was it was caused by the motor wiring on one actuator is backwards. Good value, small unit, light weight, plenty of wire length, need two 5 pin relays on certain lock trigger type vehicles. Happy camper.

## Features

- Compustar CS4900-S (4900S) 2-way Remote Start and Keyless Entry System with 3000-ft Range
- 2 4-Button remotes with Lock, Unlock, Trunk Release, & Remote Start/Stop buttons
- All-in-one remote start & keyless entry system
- Automatic Transmission only - Diesel-Engine Safe
- Professional Installation is highly recommended. Some vehicles may require extra parts which are sold separately and not included.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B077MZC8RJ |
| Batteries | 2 Unknown batteries required. |
| Best Sellers Rank | #100,596 in Automotive ( See Top 100 in Automotive ) #30 in Antitheft Alarm Systems #61 in Antitheft Remote Starters |
| Customer Reviews | 4.3 4.3 out of 5 stars (1,136) |
| Date First Available | November 21, 2017 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.57 pounds |
| Item model number | CS4900-S |
| Manufacturer | Compustar |
| Package Dimensions | 7.91 x 5.12 x 3.58 inches |

## Product Details

- **Brand:** Compustar
- **Color:** black
- **Compatible Devices:** Car Door, Ignition, Trunk
- **Max Number of Supported Devices:** 1
- **Special Feature:** Ergonomic

## Images

![Compustar CS4900-S (4900S) 2-Way Remote Start and Keyless Entry System with 3000-ft Range - Image 1](https://m.media-amazon.com/images/I/61HmPSCb4UL.jpg)
![Compustar CS4900-S (4900S) 2-Way Remote Start and Keyless Entry System with 3000-ft Range - Image 2](https://m.media-amazon.com/images/I/51p7TpG6CSL.jpg)
![Compustar CS4900-S (4900S) 2-Way Remote Start and Keyless Entry System with 3000-ft Range - Image 3](https://m.media-amazon.com/images/I/51jJPx9oQwL.jpg)
![Compustar CS4900-S (4900S) 2-Way Remote Start and Keyless Entry System with 3000-ft Range - Image 4](https://m.media-amazon.com/images/I/61sMgI3AcsL.jpg)
![Compustar CS4900-S (4900S) 2-Way Remote Start and Keyless Entry System with 3000-ft Range - Image 5](https://m.media-amazon.com/images/I/41O49SASLZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Compustar CS4900-S is an awesome remote start and keyless entry system!
*by D***S on October 9, 2025*

This is the second unit I have bought and have installed on both my truck and Jeep. The system is very responsive and the remotes feel quality and work very well. Each system's installation was simple and straightforward, and the wiring in the instructions is very clear. I highly recommend!

### ⭐⭐⭐⭐⭐ Locks may require relays.
*by M***O on December 5, 2025*

Used to replace a burned out bull dog system, motherboard. Installing this system was simple until the door locks portion. Prior system controlled the door locks without relays, this one not so. Vehicle installed in; 1995 dodge ram automatic 5.9 liter. Had electric door locks built in and triggered with negative current which with this unit requires two 5 pin relays. You'll be wiring two posts each to hot, one on each to vehicel existing lock and unlock wires, and to same coming from remote box. No posts go to ground. You have to test which end of the vehicles lock and unlock wire is going to the motor or coming from the switch after you cut the vehicle wires one being lock and the other unlock - you have 4 wire ends you tie into using the relay posts producing 4 wires and they need to connect to right existing lock and unlock ends and you determine the ends by using your vehicle lock switch to identify; hot = switch side, other by default is the actuator side. Then you can finish the wire connections. I went to manufacturer’s web site, training for installers and found a specific video instruction re: locks and relays-the instructor speaks the wiring pin to relay numbers arrangement. Takes notes and apply. Manufacturer sells a dual relay wiring harness or just buy two 5 pin. 4 pin won't work - 87a post is needed and 4 post doesn't provide. The rpm sensor i left in the default mode which is alternator or voltage sense instead of rpm coil sensor. Just wire sensor wire to relay hot wire source as it’s direct to battery and fused of course. As soon as it starts the rpm sensor which is intended to issue a signal back to the brains that the engine started is instead using the alternator sensor for volt signal increase. The remote will issue a confirmation tone that your vehicle didn't start so it kept the starter turning til it toasted out, caught fire and burned your vehicle to the ground....kidding of course but that could happen if there’s no signal to identify engines running, so wire that sensor, use the power relay source and fuse protect it. The burn to the ground wouldn’t happen, there’s a time out starter engagement limit so relax ladies and why are you reading this install review, he’s installing it. Lots of mod options to change attributes that you can program via remote key pad. Remote start is great, antenna pick up is great; hit the button, listen for confirmation, go back to bed for 15 or longer (programmable). If keyless is backwards as mine was it was caused by the motor wiring on one actuator is backwards. Good value, small unit, light weight, plenty of wire length, need two 5 pin relays on certain lock trigger type vehicles. Happy camper.

### ⭐⭐⭐⭐⭐ Easy to Install
*by P***L on April 21, 2025*

I Installed this, Myself, Works Great!! Only issue, is when I tried to Modify All Options, using the IData Link Bypass, it would not let me Save. I contacted Compustar, and they Informed me that I should Not have been Able to Purchase, here on Amazon, and should have Purchased at a Local Dealer, and Only they can Fully Program. My Issues are Door Locks, All Open at Once. No Problem.

## Frequently Bought Together

- Compustar CS4900-S (4900S) 2-Way Remote Start and Keyless Entry System with 3000-ft Range
- Idatalink Compustar Blade-AL Universal Bypass Integration Transponder Module (ADS-Blade AL)
- Idatalink ADS-USB Weblink Updater Computer Cable USB Interface for Use with Bypass Modules and Remote Start Systems.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.jp/products/51353777-compustar-cs4900-s-4900s-2-way-remote-start-and-keyless](https://www.desertcart.jp/products/51353777-compustar-cs4900-s-4900s-2-way-remote-start-and-keyless)

---

*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-21*