Diagnostic Procedure
WARNING: This page is about a different car, the 2003 Lexus IS 300 and 2002 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
Delete the DTC and insert all the presently available keys to check whether the engine starts or not. When inserting the key that does not start the engine, DTC B2795 is stored in the memory. If all keys start the engine, there is no problem. Confirm whether or not customers have ever inserted the unregistered key or the immobilizer key (with transponder chip) of another vehicle in the ignition key cylinder, and find out the cause of the detecting DTC. If a specific key does not start the engine, register the key that does not start the engine. See appropriate additional key registration under PROGRAMMING .