Mazda 6 Service Manual: No.9 abnormal shifting

No.8 does not shift to fourth gear (4gr)

No.10 frequent shifting

Other materials:

Mazda 6 Service Manual: Keyless Entry System
This system uses the key buttons to remotely lock and unlock the doors and the trunk lid, and opens the trunk lid. The system can start the engine without having to take the key out of your purse or pocket. It can also help you signal for attention or help. Operating the theft-deterrent syste ...

Mazda 6 Service Manual: Immobilizer system reprogram procedure
Note When an error occurs during the reprogram procedures, except when the PCM is replaced, repeat the procedure from Step 1. If you still cannot reprogram, confirm how many keys can start the engine. Then, perform the key replacement or addition reprogram procedure according to the val ...