Land Rover Jaguar B13c2-49

The wiper motor communicates with the BCM via a LIN bus wire. Check for continuity and ensure the wire isn't frayed or shorted to the chassis. Hardware Reset:

Note: This sensor is sometimes mistakenly called a "rain detection sensor" in online ads; the actual rain sensor is integrated into the mirror housing. The part numbers listed above are specifically for the .

While not a recall, many owners have reported that JLR dealers are often aware of the high failure rate of these sensors. It is always worth asking your local dealer if they will cover it under a "goodwill" policy, especially if the car is just out of warranty. land rover jaguar b13c2-49

: Check for any signs of moisture intrusion near the rearview mirror housing or damage to the sensor connector. Hard Reset

The diagnostic trouble code (DTC) . This sensor, typically tracked under part number LR058011 , measures cabin humidity right against the glass to tell the climate control module when to trigger the air conditioning compressor and clear a foggy windshield. When the "-49" sub-type code flags, the sensor's internal circuitry has completely failed, leaving your vehicle unable to automatically manage interior window fogging. The wiper motor communicates with the BCM via a LIN bus wire

: JLR sensor optics and thermal tracking work best with factory-spec glass (such as Pilkington OEM). Substandard glass thickness or incorrect tint layers can cause the sensor to behave erratically, eventually recording an internal runtime fault.

: The system fails to intelligently blow air at the glass when visibility drops. The part numbers listed above are specifically for the

Locate the sensor behind the rearview mirror. Check the wiring harness and connector for any signs of damage, corrosion, or loose pins.

The fault code in Land Rover and Jaguar vehicles specifically refers to a failure of the Windshield Humidity/Mist Sensor . The "Story" of the B13C2-49 Fault

The most common replacement OEM parts corresponding to this failure include for Land Rover models and Part Number JDE35470 or BJ32-13D693 for Jaguar applications. Step-by-Step Diagnostic & Repair Guide Step 1: Rule Out Windshield & Wiring Issues

Modern Land Rovers and Jaguars are technology marvels, but they are still subject to the laws of computing: memory fails, and software glitches. By understanding , you save yourself diagnostic fees and unnecessary part replacements. You are not just a driver; you are now an informed owner who can speak the language of the diagnostic scanner.