Range Rover Fault Code Access Blocked, Help Needed!

Hi there! I've got some experience working on Land Rovers, as I own a 2007 Range Rover Sport (also had a Discovery before). Had a similar issue with my central fault memory being locked out. Super frustrating! Turned out my diagnostic interface module was acting up. Took it to my regular workshop and they replaced the component, got me back on the road in about 4 hours. The whole thing cost me around 625 Euro, but at least it solved the problem completely. My mechanic mentioned this is somewhat common with these models. Before I can give more specific advice, could you share: Which trim level you have? Have you noticed any other electrical issues? Does your key fob work normally? This info would help me understand if you're dealing with the same thing I faced.

Thanks for sharing that experience! My Range Rover just hit 199795 KM and had its service last month. Mine's the HSE trim, and yeah, the key fob's working fine with no other electrical issues that I've noticed. It's good to know about the diagnostic interface module being the culprit in your case. Did your mechanic mention any warning signs before it completely failed? Also, wondering if they tried any reset procedures before going straight to replacement? Getting it sorted in 4 hours sounds pretty decent. I'm hoping mine might be something simpler, but at least I know what I might be in for cost-wise if it's the same issue. Really appreciate the help!

Hey again! Thanks for those extra details about your Range Rover. You know, thinking back to when I had this issue with my Sport, there weren't really any clear warning signs before the diagnostic interface module went kaput. Everything was working fine one day, and then, bam!, fault memory lock. And yeah, my mechanic actually tried a few reset procedures first. He disconnected the battery for about 30 minutes (the old "turn it off and on again" trick), and also attempted a manual reset through the OBD port. Neither worked for me, which is why we ended up replacing the module. Since your mileage is pretty close to what mine was when this happened (I was at about 195000 KM), and you're seeing the same symptoms, it's probably worth checking the module. But hey, definitely get your mechanic to try those reset procedures first, you might get lucky! I should mention that after fixing this, my Range Rover's been running like a dream. Though these cars can be a bit finicky with their electronics, once you sort out the issue, they're solid. Let me know how it goes, really curious if it turns out to be the same problem!

Thanks so much for all that detailed info! Really helpful to know about the reset procedures, definitely going to ask my mechanic to try those first before jumping straight to replacing the module. That could save me some serious cash if it works! It's actually quite reassuring to hear that yours has been running smoothly since the fix. The similarity in mileage does make me think we might be dealing with the same issue. I've booked it in for next week, and I'll make sure they try the battery disconnect and OBD reset first. I've always loved this car despite its quirks, so I'm willing to put up with these occasional electronic problems. It's just good to know what I might be dealing with, helps me mentally prepare for the potential cost! Thanks again for taking the time to share your experience. It's really made me feel better about the whole situation. I'll definitely update once I get it sorted out!