Range Rover L322 (2006–2009) Coolant Expansion Tank Replacement — Easy DIY Fix

If you’re seeing a Low Coolant warning on your 2006–2009 Range Rover L322 even though the tank is full, the real problem is usually the coolant expansion tank (also called the coolant reservoir). The float inside these bottles hardens over time and sinks — causing a false warning and sometimes leading to bigger cooling issues. In this detailed DIY guide, I’ll show you step-by-step how to replace the coolant expansion tank on the L322, including: • Removing the headlight for better access • Locating the mounting bolts and hose clamps • Safely disconnecting the coolant hoses • Draining and reusing your coolant • Explaining how the sensor works • Demonstrating why the tank fails Whether your L322 is a 2006, 2007, 2008, or 2009 model, this repair is the same — and doing it yourself can save you hundreds in shop labor. If your Range Rover is running hot, leaking coolant, or constantly showing warnings, this is a must-do repair. Subscribe for more Range Rover DIYs, repairs, and adventure content! Visit us on our other channels: instagram.com/lovecocoandchamp instagram.com/jinabarney instagram.com/randygbarney https://randygbarney.com/ https://jinabarneydesignz.com/ Product Links: (As an Amazon Associate we earn from qualifying purchases.) Coolant Overflow Reservoir Tank - Aftermarket: https://amzn.to/4nFv6MW Genuine land rover coolant overflow reservoir bottle: https://amzn.to/4nDsbEp #RangeRover #L322 #CoolantTank #DIYRepair #LandRover #CarMaintenance #OverheatingFix #CoolantLeak #ExpansionTank #RangeRoverDIY #RangeRoverL322 #RangeRoverRepair #CoolantExpansionTank #OverheatingFix #LandRoverDIY #carrepair Chapter Time Stamps: 00:00 – Introduction & Low Coolant Warning Problem Intro, overview of the issue, explanation of the failing float inside the tank. 01:29 – What This Video Will Cover Notes about optional headlight removal and reverse steps not shown. 02:03 – Removing the Headlight (for More Access) Removal of screws, explanation of why the headlight helps reveal bolts and hoses. 03:07 – Wiggling the Headlight Loose All screws out, retrieves dropped screw. 03:57 – Disconnecting the Headlight Harness Shows rear connector, detent button, and full removal. 04:44 – Inspecting the Coolant Bottle Area Space assessment, bottle is very full, planning drain strategy. 05:06 – Why the Coolant Bottle Fails (Float Problem) Explanation of the hardened float causing false warnings. 11:29 – Sliding the Bottle Off the Mount Bottle frees from its slot but hoses still hold it in place. 12:00 – Removing the Top Hose Top hose comes off to increase wiggle room. 12:17 – Accessing the Bottom Clamp Identifies the lower clamp and explains approach. 13:22 – How to Remove Spring Hose Clamps Demonstrates using channel locks and explains heat-bonding. 14:00 – Working the Hose Free Rocking the hose loose and sliding clamp back. 15:00 – Explaining the Hose Functions & Expected Coolant Flow Discusses feed hose behavior and why top port is dry. 15:23 – Tight Space & Switching Tools Attempts needle-nose pliers; switches back to channel locks. 16:23 – The Reality: Right Tool Required Confirms specialized tools work best. 16:37 – Preparing for Coolant Drain (Potential Overflow) Notes possible volume exceeding jug capacity. 17:00 – Removing the Lower Hose & Draining Coolant Lower clamp off, hose loosened, coolant begins flowing. 17:22 – Managing Multiple Coolant Streams Coolant from hose + bottle, maintaining bucket position. 18:07 – Draining the Hose First Plugging bottle port to empty hose cleanly. 18:37 – Hose Drained; Bottle Ready for Removal Moves hose out of the way. 18:48 – Lifting Out the Coolant Bottle All lines disconnected; maneuvering bottle out. 19:07 – Minimizing Spills & Extracting Bucket Tilts bottle, catches remaining drops, pulls bucket out. 19:49 – Reusing Coolant (Because It’s New) Shows draining process and venting to speed flow. 20:04 – Working the Coolant Out of Internal Chambers Tilting and draining trapped coolant. 20:33 – Showing the Sensor Mount Location Explains how the sensor snaps in, sealed through plastic. 21:08 – How the Sensor Attaches Inside the Bottle Demonstrates spring clip and how the plug connects. 21:47 – Aftermarket Sensor Issue & Example Tests fitment, shows failure on old bottle. 22:02 – Why Replacing the Bottle Is the Real Fix Float failure explained; sensor replacement isn’t the solution. 22:19 – Installed New Bottle & Solved Coolant Warning New tank installed, low-coolant warning cleared. 22:29 – Final Thoughts & Thanks Appreciation for viewers, video intentionally detailed. 22:41 – End of Video Range Rover L322 coolant expansion tank replacement, how to replace coolant reservoir, DIY Range Rover maintenance, 2006 Range Rover cooling system, 2009 Range Rover coolant tank, L322 coolant problem,