Mazda CX30 Data Communication Module (DCM) failure

Joined
Nov 5, 2025
Messages
5
Hi everyone,

I own a Mazda CX-30 Skyactiv-X, always serviced at an official Mazda dealer in Spain.
Recently, the Data Communication Module (DCM) failed, even though I’ve never used any of the connected services (MyMazda app, remote functions, etc.). The dealer quoted €1,650 for replacement.
This seems like a premature failure of an electronic component that should last the lifetime of the vehicle, especially since it hasn’t been used.
I’ve already filed a formal complaint with Mazda Spain, asking them to cover the full cost.
Has anyone here had a similar issue with the DCM or eCall system on the CX-30? Any advice or shared experiences would be greatly appreciated.

Thanks in advance,

Juan Antonio, Madrid (Spain)
 
have you checked the English-speaking/USA Mazda forums?

dunno what the biggest mazda forum would be.

hopefully it's something as simple as accessing the module and swapping it from one from a wrecked vehicle.
 
Hi everyone,

I own a Mazda CX-30 Skyactiv-X, always serviced at an official Mazda dealer in Spain.
Recently, the Data Communication Module (DCM) failed, even though I’ve never used any of the connected services (MyMazda app, remote functions, etc.). The dealer quoted €1,650 for replacement.
This seems like a premature failure of an electronic component that should last the lifetime of the vehicle, especially since it hasn’t been used.
I’ve already filed a formal complaint with Mazda Spain, asking them to cover the full cost.
Has anyone here had a similar issue with the DCM or eCall system on the CX-30? Any advice or shared experiences would be greatly appreciated.

Thanks in advance,

Juan Antonio, Madrid (Spain)
What year is your Mazda and what is the consumer protection like in Spain? Is there a recall for this?
 
have you checked the English-speaking/USA Mazda forums?

dunno what the biggest mazda forum would be.

hopefully it's something as simple as accessing the module and swapping it from one from a wrecked vehicle.
Thanks a lot!!!
 
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