Are you experiencing any other on your dashboard, or is the fogging your only issue?
Far from being a basic ambient temperature probe, this single housing actually integrates three highly sensitive components: Windshield Glass Temperature Sensor Relative Humidity Sensor
: If the vehicle recently underwent a windshield replacement, a non-genuine glass that is too thick, or an improperly seated sensor gel pad, can trap heat or alter sensor resistance, mimicking an internal failure. How to Diagnose Code B13C2-49
Moisture Intrusion: If there is a microscopic leak in the windshield seal or if high humidity consistently gets behind the trim cover, the sensor’s internal circuitry can corrode. land rover jaguar b13c2-49
Using your scanner, navigate to ACM/Touch Screen live data. Look for:
Loose, corroded, or damaged pins in the sensor's electrical connector can interrupt the data signal, leading the car's computer to register an internal failure.
You may notice one or more of the following before or after the code sets: Are you experiencing any other on your dashboard,
A failing or dead misting sensor causes erratic behaviors within the HVAC and safety sub-systems:
Understanding Fault Code B13C2-49 in Land Rover and Jaguar Vehicles
The sensor in question goes by a few names, including the "windshield misting sensor," "humidity sensor," or, in some JLR documents, the "front windscreen misting sensor." Its primary role is to keep your windows clear and your cabin comfortable. Using your scanner, navigate to ACM/Touch Screen live data
If you own a modern Land Rover or Jaguar vehicle—particularly models equipped with the Pivi Pro or InControl infotainment systems—you might have encountered an enigmatic code during a diagnostic scan: .
Drivers may receive a pop-up message on the instrument cluster (if still functional) stating: "Unable to load driver profile" or "Touchscreen unavailable - please contact dealer." This is a direct result of the B13C2-49 internal failure.
While replacing the misting sensor is a simple job, electrical problems in Jaguar and Land Rover vehicles can sometimes run deeper. If the B13C2-49 code persists even after installing a new sensor, the issue may lie within the (the local communication network the sensor uses) or the main Climate Control Module . If your vehicle is throwing this code, tell me:
When the TSM is stuck in a boot loop, it never goes to "sleep." This keeps the vehicle’s CAN (Controller Area Network) bus awake, leading to parasitic drain. Owners often complain of a "dead battery" after leaving the car parked for 48 hours.