About the CRUX CS-TJ20B Toyota Radio Replacement Interface
Product highlights:
- connect a new stereo in select 2003-up Toyota-built vehicles with JBL audio system
- retain your steering wheel controls with select car stereos
- retains factory aux input
- retains JBL amplifier (does not retain fader control)
- warranty: 1 year
- MFR # CS-TJ20B
- Item # 249CSTJ20B
- California customers: Please click here for your Proposition 65 WARNING.
What's in the box:
CRUX CS-TJ20B Toyota Radio Replacement Interface owner's manual
If you need assistance accessing this owner's manual, please give us a call.- Radio replacement interface
- Vehicle harness
- SWC harnes (Kenwood/JVC)
- SWC harness (Pioneer/Sony)
- Installation Instructions
More details on the CRUX CS-TJ20B Toyota Radio Replacement Interface

Product Research
Features
Radio Replacement Interface: The CRUX CS-TJ20B is a radio replacement interface for select Toyota & Lexus vehicles with factory JBL audio system. It facilitates the integration of an aftermarket radio and enables retention of factory features when replacing a factory installed radio in select Toyota vehicles with JBL amplified system. The CRUX CS-TJ20B is also pre-programmed for retention of factory steering wheel controls.
Vehicle Compatibility: The CRUX CS-TJ20B radio replacement interface works with the following 2003-2015 Toyota & Lexus vehicles featuring factory JBL audio system.
Make | Model | Year |
---|---|---|
Toyota | 4-Runner (with factory navigation) | 2003-2014 |
Avalon (without factory navigation) | 2005-2012 | |
Camry | 2007-2011 | |
Camry Solara (without factory navigation) | 2004-2008 | |
Corolla | 2009-2011 | |
FJ Cruiser | 2011-2014 | |
Highlander (without factory navigation) | 2008-2013 | |
Highlander Hybrid (without factory navigation) | 2008-2013 | |
Matrix | 2005-2010 | |
Prius (with factory navigation) | 2004-2011 | |
P:rius (without factory navigation) | 2004-2015 | |
RAV4 | 2004-2012 | |
Sequoia (with factory RDS radio) | 2005-2013 | |
Sienna | 2004-2014 | |
Tundra (with factory navigation) | 2007-2013 | |
Tundra (without factory navigation) | 2004-2013 | |
Venza | 2009-2015 | |
Lexus | IS300 | 2003-2005 |
LS430 (without factory navigation) | 2006 |
Retains Factory Amplifier: The CRUX CS-TJ20B will retain your vehicle's factory JBL Harman-Becker Digital-Synthesis Amplifier, including JBL (Pioneer-made) amplifiers. Use the three gain adjustment dip-switches to level match your aftermarket head unit's output with the factory amplifier's input. Balance & Fader control are not supported and lost when replacing the factory radio with an aftermarket head unit. Make sure the factory radio's Balance & Fader settings are centered before removing the factory radio.
Note: Does not retain Mark Levinson, Pioneer, Nakamichi, or Harman Kardon factory amplifiers.
Retains Steering Wheel Controls: The CS-TJ20B will retain your vehicle's factory steering wheel controls. Two steering wheel control harnesses are included, but only one will be used based on your brand of aftermarket head unit (see Installation Instructions). You will also need to configure the CS-TJ20B's three dip-switches based on your brand of aftermarket head unit (see Installation Instructions). Retained steering wheel control functions will vary by brand of aftermarket head unit (some functions require short or long button press).
- Power/On Off
- Source
- Volume Up/Down
- Mute
- Track/Seek Up, Track/Seek Down (including Presets)
- Pick Up/End Call
- Voice Control (requires aftermarket head unit with Siri or Android control)
Retains Factory Aux Input: The CS-TJ20B lets you retain your vehicle's factory Auxiliary Input through the use of your aftermarket head unit's rear-panel Aux input. The CS-TJ20B is outfitted with stereo RCA jacks, so if your aftermarket head unit features a 3.5mm jack, you will need a RCA-to-Minijack adapter (sold separately).
Navigation Outputs: The CS-TJ20B provides a Parking Brake, VSS (vehicle speed sense), and a Reverse Gear output to make installing an aftermarket navigation head unit simpler and less time consuming.
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Customer Q&A
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Easy to install, works 90% of the time. Once in about 10 times the steering wheel controls don't work and no sound. Just need turn vehicle off and then on again and the system will work.
Mike from West Richland, WA