After a side impact collision, your 2021 Ram 1500's blind spot monitoring system may stop functioning. The radar sensors that power this system are located in the rear corners of the vehicle, directly in the path of side impacts, making them vulnerable to collision damage.
Blind Spot Sensor Location
Ram 1500 blind spot sensors are typically mounted inside the rear bumper or behind the rear quarter panels. A side impact, even one that primarily affects doors or bed sides, can damage sensors through direct impact, sheet metal deformation, or wiring damage.
Types of Damage
The radar modules themselves can be cracked or have internal damage from impact forces. Wiring running to the sensors can be severed or damaged. Mounting brackets can be bent, misaligning the sensors. Body panel replacement may leave sensors improperly positioned or blocked. Paint or undercoating overspray can affect radar transmission.
Code C2116 Specifics
This code indicates a blind spot radar sensor performance problem. The sensor may be physically damaged, misaligned, obstructed, or have communication issues. Diagnosis must determine whether the sensor needs replacement or simply requires recalibration after body repair.
Repair Requirements
If sensors are physically damaged, replacement is necessary. Replacement sensors must be correctly positioned and may require programming. Wiring repair must restore full circuit integrity. After any blind spot sensor replacement or body repair in that area, system calibration is typically required.