Can the annoying chimes be turned off by the owner? I've looked everywhere and no previous Toyota techniques work. The Carista OBD2 device may be an answer but it costs.
I can find many "cargo covers" in the Toyota catalog for other models that look like the right item. They all say, "May not fit your selected vehicle." No "tonneau covers" are listed for the Land Cruiser. Of course the parts listed for owners may not be as current as the dealer's system.
I had the dealer swap 265/70-18 KO3s onto our 1958 model. That's the best fit for the stock 7-inch rims and look good. The dealer even gave a credit for the all-season stock tires.
No cargo cover on my 1958 either. Nor is one specific to the Land Cruiser available from Toyota parts. Hard to believe they overlooked such a standard safety and security feature.