Garage
Shop

See all parts that fit your 2004 Explorer

Clifford Responder One 4203X

2-Way Responder Vehicle Remote Start Keyless Entry System w/ Two Remotes (4203X)

Clifford
Shop all Clifford
Product videos
highlight-star-icon

2-Way Responder Remote Start System • Virtual Tach • Parking Light Flash • Defroster Output • Unlock While Running • Horn Honk Feature • Includes 2 One Button Remote Controls • Range up to 2000 Feet • LED Confirmation

Learn more about the 4203x

We apologize

This item has been discontinued


Loading...
70-1771 main

Metra 70-1771

Install a New Car Stereo in select 1998-2011 vehicles from Ford, Mazda, Mercury

51
FD23B main

Scosche FD23B Wiring Harness

Install a new car stereo in select 2003-2014 vehicles from Ford, Lincoln, Hyundai

134
95-5026 main

Metra 95-5026 Dash Kit

Install a new Double-DIN car stereo in select 2002-2006 vehicles from Ford, Lincoln, Mercury (Black)

18
-41.68%

$13.99

List price $23.99

FD1428B main

Scosche FD1428B / FD1428 Dash Kit

Install a new Double-DIN car stereo in select 2001-2006 vehicles from Ford, Lincoln, Mercury (Black)

39
-9.51%

$11.99

List price $13.25

BV850ACP main

Boss Elite BV850ACP

6.75" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto with Backup Camera

5
iLX-W650 main

Alpine iLX-W650

7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)

123
-5.72%

$329.95

List price $349.95

UTE-73BT main

Alpine UTE-73BT

Single DIN Digital Media Receiver with Bluetooth (SiriusXM Ready)

43
-16.69%

$149.95

List price $180.00

VSP68 main

NVX VSP68

600W Peak (200W RMS) 6x8" V-Series 2 Way Coaxial Car Speakers

46
-16.67%

$89.99

List price $107.99

XRM59BT main

Dual XRM59BT

Single DIN Digital Media Receiver with Bluetooth, USB and Aux

28
H7683 main

Cerwin Vega H7683

720W Peak (120W RMS) 6x8" HED Series 3-Way Coaxial 4-ohm Speakers

50
-16.67%

$79.99

List price $95.99

Product Highlights


2-Way Responder Remote Start System • Virtual Tach • Parking Light Flash • Defroster Output • Unlock While Running • Horn Honk Feature • Includes 2 One Button Remote Controls • Range up to 2000 Feet • LED Confirmation

Description


Make Sure You Have Everything You Need!


Nearly all cars require an immobilizer bypass to add a remote start system. Click here to add one to your order!

 

4203X Features

  • 2-Way Responder Remote Start System
  • Not sure which model is right for you? Click Here to compare different Clifford models
  • Virtual tach
  • D2D Port for optional plug-in XPRESSKIT vehicle interface
  • Parking light flash
  • Unlock while running
  • Extreme capacity relays (XCR) onboard
  • Defroster output
  • Horn honk feature
  • Includes 2 one button remote controls
  • Range up to 2000 feet
  • LED confirmation
  • 1-year Sonic Electronix warranty

Replacement / Additional Remote Options:

Clifford Model Comparison

Model Security Remote Start Keyless Entry 2-Way Main Remote Type Range Secondary Remote Channels Trunk Pop
5904x LED Screen Up to 1-Mile 5-Button, 1-Way 4
5704x LCD Screen Up to 1-Mile 5-Button, 1-Way 4
5204x 5-Button 2000 Feet 5-Button, 1-Way 4
5104x 5-Button, 1-Way 2000 Feet 5-Button, 1-Way 5
4704x LCD Screen Up to 1 Mile 5-Button, 1-Way 4
4204x 5-Button 2000 Feet 5-Button, 1-Way 3
4203x Unlock ONLY 1-Button 2000 Feet 1-Button N/A
4104x 5-Button, 1-Way 2000 Feet 5-Button, 1-Way 3
3305x LCD Screen 1500 Feet 5-Button, 1-Way 2
3303x LCD Screen 2000 Feet 5-Button, 1-Way 4
3105x 4-Button, 1-Way 1500 Feet 4-Button, 1-Way 2
3102x 4-Button, 1-Way 1/4 Mile 4-Button, 1-Way 5

Loading...
REF507CF_2_MET-825601_2 main

2 Infinity REF507CF (INFSPKRF507CFUS) w/ Adapter Plates

390W Peak (130W RMS) 5.25" Reference Series 2-way 3-ohm Component Speaker System with Speaker Adapter Plates

3
-12.14%

$477.88

List price $543.88

BV850ACP main

Boss Elite BV850ACP

6.75" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto with Backup Camera

5
Limited time!
46CSC654 main

Kicker CSC65 (46CSC654)

600W Peak (200W RMS) 6.5” CS Series 2 Way Coaxial 4-ohm Speakers

122
-33.36%

$79.96

List price $119.99

DMH-1800NEX main

Pioneer DMH-1800NEX

6.8" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay, Android Auto, and SiriusXM Ready

2
-16.67%

$349.99

List price $420.00

iLX-W650 main

Alpine iLX-W650

7" Double DIN Touchscreen Digital Multimedia Receiver with Bluetooth, Apple CarPlay and Android Auto (SiriusXM Ready)

123
-5.72%

$329.95

List price $349.95

DMH-W4660NEX main

Pioneer DMH-W4660NEX

6.8" Double DIN Digital Multimedia Receiver with Bluetooth, Wireless Apple CarPlay, and Android Auto (SiriusXM Ready)

2
-20.00%

$599.99

List price $750.00

43DSC6504 main

Kicker DSC650 (43DSC6504)

480W Peak (120W RMS) 6.5” DS Series 2-way 4-ohm Coaxial Car Speakers (DSC6504)

28
-10.53%

$84.99

List price $94.99

DB652 main

Polk Audio DB652 (DB 652)

600W Peak (200W RMS) 6.5" DB+ Series 2 Way Coaxial 4-ohm Car, Marine and Powersports Speakers

12
-9.16%

$109.00

List price $119.99

Limited time!
Club 622 main

JBL Club 622

360W Peak (120W RMS) 6.5" Club Series 2-way Coaxial 3-ohm Speakers

5
-28.58%

$99.95

List price $139.95

CV15BT main

Cerwin-Vega CV15BT

Single Din Digital Media Receiver with Bluetooth

3

Best selling similar products

5908V small

Viper 5908V

• 2-Way Remote Start, Keyless Entry and Car Alarm System
• Includes (1) 2-way LCD transmitter and (1) 1-way sidekick remote control transmitter
• 1 mile range
• Antenna with integrated valet switch and LED

$469.99

List price $529.99

2103V small

Viper 2103V

• 1-Way Keyless Entry Car Alarm System
• 4-Button Transmitter
• 1/4 mile (1320 feet) range

$119.99

List price $139.99

5108V small

Viper 5108V

• 1-Way Remote Start, Keyless Entry and Car Alarm System
• Includes (2) 4-button LED remote control transmitter
• 1/4 mile (1320 ft) range
• Antenna with integrated valet switch and LED

$209.99

List price $249.99

OL-RS-CH5 small

Omega OL-RS-CH5

• Standalone Remote Start Solution System
• Optional add on RF kits available and smartphone compatibility
• Custom plug-and-play T-Harness included
• Control door lock and unlock, remote start and more using your Smartphone
• Compatible with select 2005-2018 vehicles from Dodge, Jeep, Chrysler

(23)

$93.99

List price $199.99

D9858V small

Viper D9858V

• 2-Way 5-Button Remote Start and Car Alarm LED Transmitters
• Includes (1) 2-way LED transmitter and (1) 1-way transmitter
• 1 mile range
• Compatible with Viper DS4 and DS4P security systems

$209.99

List price $249.99

OL-RS-CH4 small

Omega OL-RS-CH4

• Standalone Remote Start Solution System
• Optional add on RF kits available and smartphone compatibility
• Custom plug-and-play T-Harness included
• Control door lock and unlock, remote start and more using your Smartphone
• Compatible with select 2008-2016 vehicles from Dodge, Ram, Chrysler

(21)

$149.99

List price $199.99

AL-560 small

Excalibur AL-560 Keyless Entry Security System

• 1-Way Keyless Entry Car Alarm
• Two 4 Button Transmitters
• 500' Range
• Dual zone shock sensor included • Valet Mode
• Remote Panic Operation
• Starter Interrupt included

(1)

$59.99

List price $64.99

No picture

Viper D9957VHD

• 2-Way 5-Button Remote Start LCD Transmitters
• Includes (1) 2-way 5-button LCD transmitter and (1) 1-way transmitter
• 3 miles / 15840 ft range
• Compatible with Viper DS4 and DS4P security systems

$399.99

List price $499.99

AL-1775-3DB small

Excalibur AL-1775-3DB

• 2-Way Keyless Entry Car Alarm with Remote Start Control
• 4-Button LED Transmitter with Digital Display
• Up to 3000 ft Range
• Multi-Vehicle Support

$119.99

List price $170.78

5308L small

Avital 5308L

• 2-Way Remote Start Keyless Entry Car Alarm System
• Includes (1) 2-way LCD transmitter and (1) 1-way LED transmitter
• 1 mile (5280 feet) range
• Includes internal antenna and USB port
• Programming and command buttons

$299.99

List price $349.99

Specifications & Details


General Features
System Type
Remote Start Only
Car Alarm
Yes
Remote Start
Yes
Keyless Entry
Yes
2-way Paging
No
Number of Remotes
2
Number of Buttons on Primary Remote
1
Main Transmitter Type
Button(s)-only with LED Lights
Sidekick Remote Transmitter Type
Buttons with LED
Number of Vehicles Supported
1
Number of Auxiliary Outputs
Not specified by manufacturer
PC Programmable
No
Smartphone Compatibility
No
Professional Installation Recommended
Yes
Alarm Features
Paging Range
2,000 Feet
Siren
Yes
Remote Start Features
Cold Start Timer
No
Turbo Timer
No
Compatible with Diesel Engines
No
Engine Start Intervals
No
Compatible with Manual Transmissions
No
Warranty and Return Policy
Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider
Manufacturer

Item Details


Manufacturer:

Model Number:

RESPONDER-ONE-3

Weight:

4.00lbs

Internal SKU:

4203x

Internal Product ID:

30132

Product and How-to Videos


Customer Ratings & Reviews


Clifford Responder One 4203X thumbnail image

5 star
0%
4 star
0%
3 star
0%
2 star
0%
1 star
0%



Durability
0
Value
0
Features
0
Design
0
Usability
0

Customer Reviews

Sort by:

Loading...
Sorry, no reviews found


CDX-GT420U small

Sony CDX-GT420U

CD, MP3, WMA Player with Remote and USB Input

(4)

$99.99

List price $129.99

XB-CLRAICY-1F2M small

JL Audio XB-CLRAICY-1F2M

RCA Audio Y-Adapter Interconnect Cable, One Female Plug to Two Male Jacks

$4.99

List price $9.99

HA-1000.4-BLACK small

Hitron HA-1000.4 (BLACK)

1000W Max, 4-Channel Amplifier

(2)

$94.99

List price $189.99

TI1200.1 small

Phoenix Gold TI1200.1 Titanium Series

$809.99

List price $1399.99

IQ-2101 small

IQ Smart Solutions IQ-2101

GPS Care and Cleaning Kit with Case, Screen Protectors and Cleaning Cloth

$39.95

List price $39.95

MPC-I300-Y-1F small

Monster Cable MPC I300 Y-1F

2-Pack of Y-Adapters: 1 Female Plug to 2 Male Ends, 300 XLN Series Interconnects

(4)

$17.99

List price $29.99

PEQX3 small

Rockford Fosgate Punch PEQX3

Wired Remote Punch EQ Control for One, Two, or Three Amplifiers for select 2007 and Newer Rockford Fosgate Amplifiers

$36.99

List price $56.99

SC-1 small

Soundstream SC-1 1 Farad Digital Capacitor

(3)

$89.99

List price $199.99

09PWG050 small

Kicker 09PWG050 (PWG050)

50 ft Spool of 1/0 Gauge AWG Gunmetal Gray Power / Ground Cable Wire

(1)

$229.99

List price $399.99

Save up to 10 different vehicles in your garage
Vehicle
Store
Delete

2004 Ford Explorer

2004 Toyota Corolla

2006 Chevrolet Express 2500

2016 Nissan Leaf

2015 Ford Flex

2008 Audi TT

2008 Dodge Nitro

2002 Ford Windstar

1981 Porsche 911

2012 Volvo S80

Add vehicle Clear all vehicles
Where to find vehicle info
Are you sure you want to clear your garage?
This action cannot be undone. Confirm
This page was not designed for products.
If you continue, you will be redirected to a category customized for your vehicle. Continue
Loading...
Identify your vehicle and submodel details
  • Owner's manual
  • Vehicle's insurance card
  • Vehicle registration
  • Vehicle produced after 2005: Inside driver's side door
  • Vehicle produced before 2005: Rear passenger doorjamb, glove box, center console, or engine compartment
Car Info Side Door Icon
Vehicle Registration Icon
Vehicle Insurance Icon

Modern vehicles often require specific brackets, wiring harnesses, and mounting solutions. A fit guide ensures:

  • You see only parts engineered for your exact vehicle
  • You avoid incompatible radios, speakers, or wiring
  • Installation is smoother, faster, and frustration-free
  • You get the correct accessories the first time

Whether you're replacing a factory stereo or upgrading your entire audio system, the Fit Finder eliminates uncertainty.