It looks a lot like the ones I have, which were Toyota accessories. Try calling the dealership. In many cases, they have a master set for shop use in case a customer forgets to leave one and they need to remove the wheels. If so, they should be able to match the right one and provide a part number to order a replacement. Also, I would check all the usual hiding places in the vehicle. the key just might be in one of them. If the tool kit is still in the left rear compartment, that would be a good place to start looking. Then glove box, center console, pockets behind the front seats, little storage area in front center console, storage bin in overhead console. etc. etc.................