How to remove the OBU device?

[MacWillow]

To remove the OBU device: 1. First, use a hot air blower to heat it; 2. Then, use a thin card to pry it off and wipe away any residual adhesive with a cloth. The OBU is a microwave device that communicates with RSU using DSRC technology, and it is installed on the upper middle part of the car's front windshield. The function of the OBU is: using DSRC technology to establish a microwave communication link with RSU, enabling vehicle identification and electronic fee deduction without stopping the vehicle, thus creating an unattended vehicle passage.

[DeSadie]

I recently removed the OBU device because I got a new car. These things are usually stuck to the windshield with strong adhesive. The process is quite simple: first, use a hairdryer on the hot setting and blow it at the adhesive for a few minutes to soften it—don’t get too close to avoid overheating. Then, use a plastic card or a dedicated scraper to gently pry it from the edge, being careful not to use too much force to prevent cracking the glass. After removal, any leftover adhesive on the glass can be wiped off with alcohol or adhesive remover. However, I should warn you that the OBU will become inactive after removal, and you’ll need to visit an ETC service point to reactivate it. Make sure to park and turn off the engine during the whole process—safety first.

[McAva]

I've tried removing the OBU device a few times during my DIY projects. Use a heat gun to evenly warm the adhesive area, keeping the temperature around 90°C. Once the adhesive softens, gently pry it up with a plastic tool. If the device has clips or buttons, release them according to the instructions first. Cleaning the adhesive residue afterward is quite troublesome—I recommend using gasoline or a professional cleaner. However, don't attempt to disassemble the internal circuits yourself, as it contains small chips and a battery, and tampering could cause a short circuit. More importantly, it's a common design for ETC devices to lock once removed, so you'll need to bring your ID card to a service point to unbind and reactivate it. I suggest backing up important data first to avoid hassle.

[VanStephen]

I've used a simple method to remove the OBU device. Use a hair dryer to blow hot air on the adhesive area of the glass to soften it, then gently pry it off with any plastic card. Be careful not to scratch the glass and proceed slowly. After removal, clean any residual adhesive with soapy water. If you find it troublesome, you can drive directly to an ETC service station where staff will assist you for free. Avoid removing it casually when parking normally, as anti-theft is crucial, especially at night. The whole process is simple and quick, just make sure to keep the device safe.

[DanteFitz]

As someone who's been through it, don't rush when removing the OBU device. First, use a heat gun to soften the adhesive, wait a few minutes, then gently pry it open with tools to avoid glass damage. But I recommend avoiding DIY removal - it's safer to get free professional handling at an ETC service point. Post-removal device deactivation is a protection mechanism requiring reactivation. For heavy adhesive residue, use mild cleaners without damaging car paint. Always ensure the vehicle is stationary and engine off for safety. Pro tip: Regularly check OBU mounting for looseness to prevent detachment.

[DiAaliyah]

From a technical perspective, disassembling an OBU device requires an understanding of its internal structure. It is typically adhered to the glass with strong adhesive, and the key is to soften it with heat before separation. Inside, there is a small battery and a communication module—avoid pulling the wires forcefully during disassembly to prevent damage. Once removed, the device may automatically lock due to its anti-tamper design, requiring a scan or visiting an activation point with documentation to restore it. Related topic: Why is it adhered to a specific position? It's for stable GPS signal reception. For personal operation, using a heat gun with gentle movements is recommended.