Can’t seem to get it to start, just clicks when turn the ...


Can’t seem to get it to start, just clicks when turn the key Mechanic's Assistant: Can you turn the steering wheel at all? And what about the key? Is it worn or damaged? Steering wheel can be turned but then would lock if...

Can’t seem to get it to start, just clicks when turn the key Mechanic's Assistant: Can you turn the steering wheel at all? And what about the key? Is it worn or damaged? Steering wheel can be turned but then would lock if moved too far, as for starting it’s a touchless key system and key is in fine condition Mechanic's Assistant: What is the make/model/year of your car? 2007 Mazda CX-7 Mechanic's Assistant: Are you fixing your CX-7 yourself? What have you tried so far? Have been trying to diagnose myself so far, it sat out in the cold so was worried it was the battery so pushed it into neighbours heated garage and then charged and checked battery and it read 12.58V so seemed okay, then checked fuses and relays to see if they were good, thought it might be related to the key so changed the keys battery, then put a code reader on it and it gave U0100 and U2064, tried clearing them but they came right back and nothing changed Mechanic's Assistant: Anything else you want the Mechanic to know before I connect you? That should cover it all I think

Automotive Expert
Hello and thank you for using Just Answer. I am an ASE Certified Technician who will be further assisting you. Sorry to hear you're having issues with your Mazda. I know it can be frustrating, but let's see what we can do to get you going.
Automotive Expert
The codes indicates one or more modules has lost communication. Even though the voltage are good in the battery, its very possible the amps are low and you may need a new battery. I highly suggest installing a new battery if one hasn't been replaced the last 3 years.

What would cause those to lose communication ? Okay will have to go get a new battery and can try then
Automotive Expert
A faulty battery or module failure.

Other than the battery change is there anything you'd recommend trying ?
Automotive Expert
No, anything else will require a bi-directional scan tool that can connect with all modules and perform testing procedures.

if the battery swap doesn't work, should I take it in somewhere to get looked at ?
Automotive Expert
Yes, if this does not work then you may have more serious issues.

Changed the battery now, still no cranking from the engine. The other codes are gone but now got a C1306 code, any ideas ?
Automotive Expert
I believe the body control module or another module has failed.

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