Mazda ID49 Smart Key Keyless Entry Malfunction Error Solution

This is a common issue in Mazda smart key system. Sometimes dashboard will show a red light (keyless system ‘Keyless Entry Malfunction’ error) but the keys are working properly.

Here comes an example:

Maxda Cx-5 2019. This light turned on after adding another key to the vehicle. Everything on the vehicle works including the keys and functions but this light does not come off. 2 keys working properly (car is starting and remote is working). Clear DTC doesn’t work. How to take it off?

Mazda Keyless System Malfunction 1

Possible reason:

Wrong key.

The FCC ID of the key is not the corresponding one of the vehicle that is why you get the red key indicator.
The buttons and fcc and ic numbers have to match, even the buttons. You need the correct key cross refs part number from vin.
Sometimes if you want to add not original key (like vvdi and keydiy) this error will be on computer or dashboard.
People also successfully done a few with the Autel smart prox. One generated wrong fcc and light came on as well. But did AKL and generated the correct fcc and light went off.
On mazda prox always a good idea to use original key or oem refurb.



Erase all keys and reprogram 2 correct keys.

Need two original Mazda remotes, done by all key lost.  Delete keys and program 2x genuine remotes and the errors will go by itself the error.
Do always use OEM keys for Mazda push start vehicles.
Xhorse adds Mazda ID49 smart key light repair function.  Use this option then do akl on car procedure and malfunction will be deleted.
Some users solved the problem and did the following:
I generated again the key via vvdi mini key tool and chose a two-button model as well as the factory one ( in the first attempt I chose a model with 3 buttons and the third button for the trunk worked. ) after that I went to the special functions Mazda id49 smart key light repair read the factory and loaded on xhorse smart key started i procedure all keys lost deleted all keys and added them again and the error is gone.
Mazda Id49 Light Repair
They must be OEM keys.


  1. Put in the original key and read it.
  2. Put in generated remote and write.
  3. OBD clears the previously programmed remote and re-program the above remote. If the light is still on, it has nothing to do with the key data. Power off and clear the fault code.
Mazda Id49 Light Repair 2
3). Erase error with Autel.   Autel IM508/IM608 also has “Mazda ID49 Smart Key Warning Lamp Clearing” function under Special function.
Mazda Keyless System Malfunction 2
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