# Problem with 4wd hat

**URL:** <https://forum.sunfounder.com/t/problem-with-4wd-hat/328>\
**Category:** Robotic kit for Raspberry Pi\
**Created:** [June 25, 2023, 9:38am UTC](https://forum.sunfounder.com/t/problem-with-4wd-hat/328 "2023-06-25T09:38:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![WTAC123](https://avatars.discourse-cdn.com/v4/letter/w/e19adc/32.png) [@WTAC123](https://forum.sunfounder.com/u/WTAC123)\
**Post date:** [June 25, 2023, 9:38am UTC](https://forum.sunfounder.com/t/problem-with-4wd-hat/328/1 "2023-06-25T09:38:54Z")

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Dear, does anyone know how to inform the meanings of the leds on the 4wd hat plate. My PICAR 4wd, stopped working and two leds are lit red

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**Author:** ![SunFounder\_Moderator](https://avatars.discourse-cdn.com/v4/letter/s/34f0e0/32.png) [@SunFounder\_Moderator](https://forum.sunfounder.com/u/SunFounder_Moderator)\
**Post date:** [June 25, 2023, 9:56am UTC](https://forum.sunfounder.com/t/problem-with-4wd-hat/328/2 "2023-06-25T09:56:50Z")

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The LED on the driver cap board is the battery power indicator, two LEDs are on, representing the battery is fully charged state, two LEDs are off, representing the battery is dead, please charge the battery in time.

You said picar 4wd stop working, the LED is still on, did not understand what you mean.  
Please describe the problem in detail, if you can provide a video of the problem will be better.  
Convenient for us to quickly analyze the problem.

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**Author:** ![WTAC123](https://avatars.discourse-cdn.com/v4/letter/w/e19adc/32.png) [@WTAC123](https://forum.sunfounder.com/u/WTAC123)\
**Post date:** [June 25, 2023, 3:29pm UTC](https://forum.sunfounder.com/t/problem-with-4wd-hat/328/3 "2023-06-25T15:29:28Z")

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Thanks for response.  
The issues was solved. It’s works well.