CarPlay Out of Control: iOS 18.4 update causing problems – these car brands are affected

Fans of Apple have eagerly anticipated the iOS 18.4 update – but this apparently also brings a number of undesirable side effects. This includes clandestine changes in system settings and unintentionally downloaded apps. However, problems are particularly serious in the car: CarPlay has hardly used since iOS 18.4 for many iPhone owners.
As the 9to5Mac platform reports, complaints are frequent in online forums like Reddit. For several iPhone users, for example, the “Now Playing” function is no longer displayed on the onboard computer. Others have serious problems with the connection.
Connecting problems with Apple CarPlay
Some report that the connection is repeatedly aborted and rebuilt. It is said that the update has made CarPlay “broken” and “unstable”. A Honda driver reports, for example, that he has to constantly reconnect his phone or even restart the car – all since the update to iOS 18.4.
There are also connection problems in new car models such as the Mazda CX-30 from 2025. A Reddit user writes: “I had to reconnect my device five times – then I switched to the old USB connection.”
Attempts to solve the problem
The problems appear to concern vehicles from various manufacturers, including Honda, Mazda, Audi, and Ford. Users report that they have already undertaken numerous solutions, from restarting the iPhone to restarting mobile phones and cars, to various combinations of these measures. However, nothing seems to be helpful in a reliable way.
According to another Reddit user, Volkswagen has already confirmed the problems internally – but refers to Apple as a responsible authority. An official reaction from Apple has so far been achieved. The next update, iOS 18.5, is currently in beta and is expected next month.