General Service Bulletin 24-7110 - Wireless Accessory Charging Module (WACM) Aid To Improve Performance

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General Service Bulletin 24-7110 - Wireless Accessory Charging Module (WACM) Aid To Improve Performance

 

Summary

 

This article is intended to aid dealers and to provide customer recommendations to resolve concerns of the phone indicating a "temperature - cool down prior to using" warning, an inoperative or slow charging, and/or an intermittent charging while using the WACM.

 

Service Information

The WACM inductively charges a single Qi 1.x (pronounced "chee") compatible mobile phone at rates of up to 15W of power. Not all phones are compatible with wireless charging and not all phones are compatible with Qi 1.x wireless charging. Specific considerations are:

• Apple Magsafe is a proprietary technology that uses a magnet on the back of the phone or cases to place accessories such as their own charger; this is not certified by Qi 1.x and therefore not compatible with the WACM.

• Even if a phone is Qi 1.x certified using cases that include magnets or other metallic accessories will make them incompatible with the WACM.

• Wearables such as smart watches are not compatible with Qi 1.x and therefore not compatible with the WACM.

Possible Causes Of A Phone Indicating A "Temperature" Warning

Phones naturally warm up when charging wirelessly and might display warnings such as “Phone needs to cool down” which is a phone internal overheating protection mechanism to protect the battery. This is not an indication of WACM malfunction. In addition, using Wireless Apple CarPlay or Android Auto in combination with wireless charging will often heat up the phone faster. The temperature at which each phone will show an overheating message is dependent of the phone’s brand, model, battery health and battery state of charge.

 

Possible Causes Of Inoperative/Slow Or Intermittent Charging

When placing a phone on the module, the phone State of Charge may appear to not change, raise slowly, decrease, or charging goes on and off repeatedly. The speed at which each phone charges is dependent on the phone’s brand, model, battery health and battery state of charge. Streaming maps, audio or calls through Wireless Apple Car Play or Wireless Android Auto can also cause slow charging.

 

 

For additional information, see the full General Service Bulletin  attached below as a PDF document...

 

GSB 24-7110 - Wireless Accessory Charging Module (WACM) Aid To Improve Performance - 10-21-2024.pdf