Am a mechanic but am tryin to pull out a timimg chain on a 2007 mazda cx the easy way

Question edited for clarity.
Question moved to model category.

You can't Disarm the system, but there are a number of ways to try and reset it.

https://www.justanswer.com/mazda/e6z2i-believe-mazda-cx-7-locked-security-open.html

https://www.vehiclehistory.com/questions/how-do-i-perform-the-2007-mazda-cx-7-security-system-reset-204995

and more using the door lock and the key.

https://www.google.com/search?q=2007+mazda+cx-7+security+system+reset

..

if you have to ask, I think you better buy a repair manual or take it to a shop.

With the number of steps required to do this, your best bet is to purchase a Haynes manual (or equivalent). This way you have photos of the procedure plus all the correct torque spec for all the bolts when reinstalling.

Hi!
Actually the timing chain should last for AT LEAST 100.000 miles, but I would say for even more miles.
Now my questions, just to give you the right answer:
1. Do you have at least 100.000 miles under the hood?
3. Which engine do you have in the car?
2. Why do you want to change it? Do you hear a kind of rattling sound coming from the engine? If yes, then you probably just have to correct the tensing of the chain. It is getting tensioned automatically but sometimes the tensioner of the timing belt gets bad, in this case you have to change only the tensioner itself. But if you are around 100.000 or more miles, I'd change the chain too.

Please give me a bit more details so I can help you, I can upload also a documentation how to change the bad timing chain tensioner and the chain too. Changing the CHAIN is not that easy as you do not have too much place to work, and you have to dismount many things. But again, just answer the 2 questions and I'll send you the correct instructions.

Cheers,
Steve Dave

About 5 hours That is from an online workshop manual,

There are no timing marks, special tools are needed. The Mazda dealer should have been the only one to work on it. Mechanics never want to work on "Basket Cases" because of the time involved in the job. It turns a good job into a money loser. See if the dealer will at least set the timing marks for you, and you can do the rest without any liability to them. No one wants to do a job like that and then the customer wants a guarantee that there are no problems. The timing chain alone is a 5-6 hour job.

vvt actuator and you are driven by timing chain not belt common problem in cx-7

The timing chain should of been changed at 30,000 or 60,000 miles it's in the owwners manual.

the chain has stretched, it will get worse and you will damage the engine. you need to take it to the dealer so they can fix it under warranty. they now about the problem and in the last few months have seen a lot of these. if you are not over 60k then you still have power train warranty and can get it fixed for free.

no. it's a metal chain over gears like a bike chain. who said it fell off? did they do any work on it recently?