Production changes at the transponder key ECU. Use the following procedure to repair a client to resolve these problems. Repair procedure 1. Make sure that the vehicle will crank but will not start. 2. validate health and find any system immobilizer DTCS. 3. If there are any immobiliser DTC now, check the vehicle with the help of all keys. If the condition with all keys, skip to step 4. If the problem of isolated single key, refer to repair manual diagnostic chart for speci? with DTC. 4. replace the transponder key ECU. • 2007/2008 Tundra: the Interior of the car-theft deterrent/Keyless entry-engine immobiliser transponder key ECU is: delete transponder key ECU and Assembly is located on the air conditioning unit between the bulkhead on the left side. B. back side of air-conditioning units, where the transponder key ECU Assembly. C. Remove transponder key ECU from air conditioning units, sliding lower half out and travel down to release the top. 5. Select the new transponder key ECU. • 2007/2008 Tundra: vehicle interior – theft deterrent/Keyless entry-engine immobiliser transponder key ECU:-Add "6. Connect the TIS Techstream and clear all stored DTCS. 7. Check the immobilizer system to work properly. Download
