DEF Head Sensor FAILURE Solutions
Rescue-Ranger DEF Head Sensor Simulator Products Eliminate
The Effects Of DEF Head Sensor Failure Including Engine Derate
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Rescue-Ranger DEF Head Sensor Simulator Products Eliminate
The Effects Of DEF Head Sensor Failure Including Engine Derate

The patented (Patent No. US 12,723,533 B1) Rescue-Ranger EZ Switch offers exclusive analog DEF head simulators designed for 2010-2016 Freightliner, Spartan and Tiffin PowerGlide chassis. Rescue-Ranger EZ Switch models are also available in digital format for 2017 -current Freightliner, Spartan and Tiffin PowerGlide chassis.
Rescue-Ranger EZ Switch models are pre-wired for quick, easy installation, making them compatible with both analog and digital DEF heads. Seasoned DIY coach owners will find it simple to apply the Rescue-Ranger EZ Switch to their coach. However, less confident coach owners may prefer to hire an RV serviceman or technician for installation. Each Rescue-Ranger EZ Switch includes complete installation instructions.
The frequent and well-known failure rate of DEF head sensors for Freightliner, Spartan or Tiffin PowerGlide chassis can leave a coach stranded. Many coach owners have experienced the consequences of DEF head sensor failure, often resulting in their coach becoming fully derated. The Rescue-Ranger EZ Switch provides an effective remedy. This innovative Rescue-Ranger EZ Switch 'On/Off' switch enables coach owners to maintain full operational capability of their vehicles, even in the presence of a DEF head error code, without compromising performance or emissions compliance. After completing repairs or replacing the DEF head, the Rescue-Ranger EZ Switch can be easily disengaged, returning the vehicle to normal operation.
When engaged, the Rescue-Ranger EZ Switch has no impact on the performance of the DEF system or the emissions compliance of the vehicle. However, users must manually monitor the DEF system to ensure that the DEF fluid level is adequate for travel.

The Rescue-Ranger DEF Head Sensor Simulators provide the only analog and digital DEF head simulator specifically engineered to address DEF head sensor failure for 2010-2016 Freightliner, Spartan, and PowerGlide chassis. Furthermore, Rescue-Ranger is also offered in a digital format for 2017-Current Freightliner, Spartan, and Tiffin PowerGlide chassis.
Rescue-Ranger DEF Head Sensor Simulators are 100% plug 'n play, making them an ideal solution for addressing DEF head sensor failure with Freightliner, Spartan or Tiffin PowerGlide chassis. Simply locate the CAN bus connecting the DEF head with the coach's ECM; unplug the DEF head and replace it with the Rescue-Ranger plug. This unit features mounting flanges with mount holes for ease of locating and fits perfectly within Freightliner, Spartan or Tiffin PowerGlide chassis.
Rescue-Ranger offers a selection of extension cables compatible with both analog and digital DEF head simulators. These cables extend the standard 24" cable, providing users with greater flexibility for simulator mounting locations. Additionally, users can easily access the CAN bus connector to activate the simulator or re-activate the DEF head after repair or replacement, effectively addressing concerns such as DEF head sensor failure. This is part of our comprehensive Freightliner chassis solutions, which also encompass issues like Spartan DEF head sensor compatibility and Tiffin Powerglide DEF head failure.
In use, the analog and digital DEF head simulator known as the Rescue-Ranger DEF Head Sensor simulator, part of a comprehensive range of simulators, has no impact on the DEF system operation or the overall emissions system. The coach equipped with Freightliner chassis solutions remains 100% emissions compliant during operation. Users are responsible for visually checking DEF fluid levels to ensure safe coach operation, especially in cases of DEF head sensor failure, while also being aware of issues like Spartan DEF head sensor or Tiffin Powerglide DEF head failure.





Analog males connector for 2010-2016 Freightliner chassis. Connects Rescue-Ranger EZSwitch or Rescue-Ranger Simulator to chassis ECM.

Analog 5-pin male connector for 2010-2016 Spartan chassis. Connects Rescue-Ranger EZ Switch or Rescue-Ranger Simulator to chassis ECM.

Analog 2-pin and 3-pin male connectors for 2010-2016 Tiffin Powerglide chassis. Connects Rescue-Ranger EZ Switch or Rescue-Ranger Simulator to chassis ECM.

Digital male connector for 2017-Current Spartan, Tiffin Powerglide or other motorhome chassis. Connects Rescue-Ranger EZ Switch or Rescue-Ranger Simulator to chassis ECM.

Digital male connector for 2017-Current Freightliner chassis. Connects Rescue-Ranger EZ Switch or Rescue-Ranger Simulator to Freightliner chassis ECM.
We love our customers and invite you to visit during normal business hours to explore our solutions, whether you need an analog and digital DEF head simulator or are concerned about DEF head sensor failure on your Freightliner chassis, Spartan DEF head sensor, or Tiffin PowerGlide DEF head failure in your diesel motorhome chassis.
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