The headlight issue is very common in ES2 and ES4. It appears when you turn on the headlight and the brake is applied automatically and you could not accelerate it or ride it. One of the fuse broken and the repair is to bridge that fuse and let the current run through it again. What you need to do is to put the solder on top of it.

**Attention: Please inform your seller before fixing it.

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Highlight:
00:10 Ninebot ES2 light issue introduction
Step 1: 00:37 Disassemble the handle bar
Step 2: 00:49 Take down screws on the button of the stem
Step 3: 01:03 Disassemble the cables between the motor and the control board
Step 4: 01:19 Take down screws on the stem
Step 5: 02:23 Remove rob covers in the stem
Step 6: 03:30 Take out the control board
Step 7: 03:54 Disassemble the control board cover
Step 8: 04:43 Defective part shown
Step 9: 04:51 How to fix it
Step 10: 05:14 Test it after fixing
Problem resolved :)

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