Have Toyota Questions? Ask a Mechanic for Answers ASAP
Hello my name is***** am an ASE Master Technician and I am glad to help you out with your question.
You need a scan tool to get the codes. An all systems scan would be best. Anytime a dash light comes on it means that there is a code stored in the system.
This problem is impossible to diagnose without codes. A simple code reader will not work for this, you need a shop quality scan tool. Code readers are not able to get into other system besides the engine.
Please reply to this if you need more help and we can continue this conversation. If you are satisfied with my service, please rate at the top of the screen. Rating does not close out your question. Remember, sometimes it is difficult to completely diagnose your vehicle without being there, but I will try to give you the best answer I can. If I am not giving you 5 star service, please let me know what I missed.
ASE Master Technician
Let me know what you find out.