User level: Level 1 (4 points)I just bought the iphone18 pro max. The issue is in the car while charging, the charging goes on and off. I pulled the cable from the car and tried on a wall outlet and the charging stays on. So I don't think its the wire. I also used my old iphone and same cable in the car and the charging stays on. Please help me.
Also, just tried to connect phone to itunes to back up info. It has a message, Iphone dectected but could not be identified. Is the problem related?
Posted on Sep 28, 2026 1:04 PM
User level: Level 10 (454,138 points)Sep 28, 2026 11:48 PM in response to Buddhakid
Buddhakid Wrote: I pulled the cable from the car and tried on a wall outlet and the charging stays on.
If you disconnect the cable from the car and connect the same cable to a wall outlet, and the iPhone continues to charge normally, that is an important diagnostic clue. It suggests that the cable and iPhone charging system are probably functioning correctly, and the problem may instead be related to the car’s charging port, charging pad, USB interface, or the vehicle’s infotainment/firmware compatibility.
An even stronger indication is if another, older iPhone charges normally in the same car using the same connection. In that case, the car’s charging hardware is clearly capable of charging an iPhone, and the issue may be related to compatibility between the newer iPhone running iOS 27 and the car’s infotainment or USB/CarPlay implementation. This does not necessarily mean that iOS 27 or iPhone 18 Pro Max is defective; it could simply be an incompatibility or a firmware/software interaction between the two systems.
The best next step is to have the vehicle checked by a reputable authorised dealer or a qualified car-audio/infotainment specialist. They can test the charging port, USB interface, charging circuitry, infotainment system and vehicle firmware, and determine whether a software/firmware update, repair, or replacement cable is required.
In short, if the same cable charges the iPhone from a wall outlet, while an older iPhone charges normally in the car, the evidence points more toward a vehicle-to-device compatibility issue than a defective iPhone charging cable.
User level: Level 1 (4 points)Sep 29, 2026 12:48 PM in response to SravanKrA
Thank you, I was thinking the same thing a couple hours after I posted this. On my car, there are 2 ports, one for just charging and one that connects the phone to the audio system. Both ports does the same intermittent charging. Also tried to use carplay, it does work for awhile, then cuts off, comes back on after awhile, goes back off. Then after a few times, I get a message on my screen asking please unplug and replug your device. Guess I wait to see if the dealer has a update to the system.
In the meantime, to charge my phone in car, I've been using the old cigarette lighter with a adapter.
Originally posted at discussions.apple.com/thread/256366726