Land Rover C1d18-00 [new] | EASY » |

A known issue where the vehicle's own charging circuit or aftermarket accessories (like USB chargers, radar detectors, or dash cams) emit a 125MHz pulse that disrupts the TPMS sensors.

| Option | Feasibility | Notes | |--------|-------------|-------| | | Limited | Possible on MY2013+ Discovery 4 / Range Rover L405 with specific software. Always confirm with JLR TSB. | | Send RCM to specialist for EEPROM reset | Aftermarket only | Some electronics repair services can erase crash data via EEPROM reprogramming. Risks liability and may violate JLR policies. | | Replace RCM | Recommended | New RCM must be configured and calibrated using JLR Pathfinder. Requires vehicle-specific coding (VIN, options). | | Used RCM (salvage) | Not recommended | Used module likely has its own crash data. Will trigger C1D18-00 again unless reset. Also VIN mismatch causes additional faults. | land rover c1d18-00

If this is a string identifying a vehicle model configuration (common in sales data or VIN breakdowns), the proper text breakdown is: A known issue where the vehicle's own charging

This code typically appears in Land Rover and Jaguar vehicles (such as the Range Rover Evoque or Discovery Sport). It indicates an issue with the Rear Differential Locking Unit . Specifically, the control module has not received or stored the necessary calibration data required to operate the differential clutch properly. This often occurs after replacing the module or the rear axle assembly without proper configuration. | | Send RCM to specialist for EEPROM

In Land Rover models (such as Range Rover, Range Rover Sport, Discovery, Evoque, Velar), the RCM monitors impact sensor inputs and deploys airbags and seatbelt pretensioners during a crash. It contains that stores crash event data, including:

According to official Land Rover technical bulletins and owner reports, several factors can trigger this failure: TMPS Issue Codes C1D21-05 and C1D18-00