Land Rover LR3 unable to shift past 4th gear in automatic mode, possibly related to frequent overheating and coolant leaks on Land Rover LR3

Some Land Rover LR3 owners report experiencing difficulties with shifting past 4th gear in automatic mode, often accompanied by issues such as frequent overheating and coolant leaks. These problems may manifest as gear slipping, delays, and harsh gear changes, potentially causing the transmission to enter limp-home mode. Additionally, owners have noted thudding sensations when shifting, which may require manual intervention and indicate underlying transmission faults. Common symptoms include dashboard transmission fault warnings, slamming into gear during acceleration, and malfunctioning manual or sport mode features. High RPMs needed for shifting, rough transitions, and messages like "No DSC fault available" could suggest low fluid levels or defective solenoids and sensors. Other potential causes for the inability to shift gears include a faulty transmission control module, worn-out bands, or issues with the clutch or torque converter. For LR3s with over 80,000 miles, a transmission oil and filter change may help resolve these issues. It is crucial for owners to address these transmission problems promptly to prevent further damage and ensure the vehicle operates smoothly.