Tesla Model 3 / Model Y Ignition Battery Fuse, Part No. 1064689-00-J
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Tesstudio Tesla Model 3/Y Battery Pyro Disconnect Fuse
Replacement high-voltage battery pyrotechnic disconnect fuse for Tesla Model 3 / Model Y, part number 1064689-00-J. This is a safety-related HV battery disconnect component, not a standard low-voltage fuse. Order only after confirming the original part number, VIN fitment, battery configuration and required service procedure.
Key Information
- Part Number: 1064689-00-J.
- Product Type: High-voltage battery pyrotechnic disconnect / battery pyro fuse replacement part.
- Vehicle Application: Tesla Model 3 / Model Y, depending on VIN, production year, market region and battery configuration.
- Current Page Fitment Text: Fit for Tesla Model 3/Y 2017, 2018, 2019, 2020, 2021 and 2022.
- Repair Use: For replacement when the original battery pyro disconnect is diagnosed as failed, triggered, damaged or requiring service.
- Professional Installation Required: This is a high-voltage safety component and should not be installed by untrained users.
- Not A Regular Fuse: Do not confuse this with a standard blade fuse, ignition fuse, 12V fuse-box part or DIY electrical accessory.
What This Part Is Used For
A pyrotechnic battery disconnect is part of the high-voltage battery safety system. It is used to disconnect the HV battery circuit under specific fault, crash or safety conditions. Because it is safety-related, this page should be written like a repair-part page, not like a normal Tesla accessory page.
- HV Battery Safety Function: Related to high-voltage battery disconnection, not ordinary cabin power.
- Diagnostic-Driven Replacement: Replace only after proper diagnosis confirms this part is required.
- VIN-Specific Fitment: Battery configuration and service procedure can vary by model year and pack type.
- Service Procedure Required: Proper high-voltage disabling, PPE, insulated tools and post-installation checks are required.
Fitment Must Be Verified By VIN And Part Number
For high-voltage repair parts, broad model names are not enough. Customers should compare the removed part, confirm the printed part number, and verify the vehicle through VIN or service documentation before ordering.
| Check Point | What Customers Should Confirm |
|---|---|
| Part Number | Confirm 1064689-00-J is the required replacement part for the vehicle. |
| Vehicle | Confirm Model 3 / Model Y compatibility by VIN, production year and service information. |
| Battery Configuration | Confirm the pack type and service procedure for the specific vehicle. |
| Connector / Terminals | Compare connector position, metal terminal shape, mounting holes and housing structure with the removed part. |
| Service Hardware | Confirm whether new bolts, insulators or related hardware are required and whether they are included. |
| Installer | Use a qualified EV technician or Tesla service professional. |
Position This Page As A High-Voltage Repair Part
Customers buying this part are usually repair shops, technical Tesla owners, collision repair buyers or service teams. They need fast confirmation of part number, real product photos, fitment, safety requirements and package contents.
- Lead With Part Number: Show 1064689-00-J clearly in the title, main image and purchase area.
- Use Accurate Naming: Battery Pyro Disconnect / Pyrotechnic Battery Disconnect is clearer than “Ignition Battery Fuse.”
- Show Real Part Angles: Front, rear, terminal, connector, housing, mounting holes and label areas should be visible.
- Add Safety Messaging: Professional EV installation and VIN verification should appear before Add to Cart.
- Remove Generic DIY Copy: Do not describe this like a normal plug-and-play Tesla accessory.
Recommended Image Checklist
Repair-part customers make decisions by comparison. The product page should help them compare the replacement part with the original part quickly.
- Main Image: White-background product image with clear part number callout.
- Connector Image: Close-up of connector and pin area.
- Terminal Image: Clear view of metal terminals and mounting holes.
- Housing Image: Front and rear housing shape for old-part comparison.
- Package Image: Show whether bolts or hardware are included.
- Safety Image: Add “High-voltage component — qualified EV service required.”
Installation & Service Notes
This component should not be positioned as a DIY accessory. High-voltage battery work requires proper safety procedures, insulated tools, PPE, diagnostic checks and post-installation validation.
- Diagnosis First: Confirm the issue with proper Tesla-compatible diagnostics before replacing the part.
- High-Voltage Safety: Follow the correct high-voltage disabling and safety procedure before any work begins.
- Qualified Installer: Installation should be performed by a qualified EV technician or Tesla service professional.
- Correct Hardware: Confirm whether new bolts or service insulators are required for the repair.
- Proper Torque: Use the correct service-manual torque procedure and insulated tools.
- Post-Repair Check: Clear faults, measure required joints where applicable, and confirm normal vehicle operation after repair.
- Do Not Bypass: Never bypass, modify, probe or reuse a triggered pyrotechnic disconnect.
Compatibility Reminder Before Checkout
This product should be purchased only after the customer has confirmed that 1064689-00-J is the correct replacement part for the vehicle.
- Part Number: 1064689-00-J.
- Part Description: Battery pyrotechnic disconnect / battery pyro fuse.
- Current Page Fitment Text: Tesla Model 3/Y 2017–2022.
- Fitment Method: Verify by VIN, old part number, pack type and service documentation.
- Not Universal: Do not order for Model S, Model X, Cybertruck, Model 3 Highland, Model Y Juniper, Model Y L or unsupported Model 3/Y configurations unless fitment is confirmed separately.
- Not A Low-Voltage Fuse: This is not a 12V fuse-box part or normal ignition fuse.
Why This Page Needs Repair-Part Messaging
| Current Page Issue | Recommended Fix | Why It Matters |
|---|---|---|
| Title says Ignition Battery Fuse | Use Battery Pyro Disconnect / Pyrotechnic Battery Disconnect | More accurate for technical buyers and repair searches |
| Generic accessory Q&A | Use high-voltage repair-part FAQ | Customers need fitment, safety and installation clarity |
| No strong VIN warning | Add VIN verification before checkout | Reduces wrong orders and returns |
| DIY-style wording | Professional EV installation required | This is a safety-related HV battery component |
| Package contents unclear | State whether bolts and service hardware are included | Repair buyers need to know what else to prepare |
Recommended Page Content Order
- First Screen: Model 3/Y Battery Pyro Disconnect Replacement + Part No. 1064689-00-J + professional installation warning.
- Second Screen: Real product photos: front, rear, connector, terminals and mounting holes.
- Third Screen: VIN and part number verification checklist.
- Fourth Screen: What this part is: HV battery pyrotechnic disconnect, not a regular fuse.
- Fifth Screen: Installation and high-voltage service safety notes.
- Final Screen: Compatibility reminder, package contents and product-specific FAQ.
Frequently Asked Questions
What is part number 1064689-00-J?
It is a Tesla Model 3 / Model Y high-voltage battery pyrotechnic disconnect, commonly called a battery pyro disconnect or battery pyro fuse. Customers should confirm the old part number before ordering.
Is this a normal ignition fuse?
No. This is not a standard low-voltage ignition fuse or blade fuse. It is related to the high-voltage battery disconnect system.
Which Tesla models does it fit?
The current page fitment text lists Tesla Model 3/Y 2017–2022. Exact compatibility should still be verified by VIN, old part number, production year, battery configuration and service documentation.
Can I install this myself?
No. This is a high-voltage safety component. Installation should be performed only by a qualified EV technician or Tesla service professional with proper PPE and insulated tools.
Do I need to confirm my VIN before ordering?
Yes. VIN verification is strongly recommended because Model 3 and Model Y battery configurations and service procedures can vary.
Does this fix every high-voltage battery warning?
No. HV battery warnings can have multiple causes, including wiring, connectors, battery pack issues, control modules or other faults. Proper diagnosis is required before replacing this part.
Are bolts or installation hardware included?
The final package contents should clearly state whether bolts, insulators or service hardware are included. Do not assume extra hardware is included unless the product page states it clearly.
Is this an OEM Tesla part?
The listing uses Tesla part number 1064689-00-J. If the item is genuine OEM, the page should show clear packaging or label proof. If it is aftermarket, describe it accurately as a replacement part.
Why is professional installation required?
This component is part of the high-voltage battery system. Incorrect handling, installation or testing can create serious safety risks and vehicle damage.
Is the Tesla vehicle or battery pack included?
No. This product includes the replacement battery pyro disconnect fuse only. Tesla vehicle, HV battery pack, bolts, diagnostic tools, service labor and other accessories are not included unless specifically stated.
Q&A
We provide assistance through email, live chat, and detailed installation guides. Additionally, we offer step-by-step tutorial videos featuring influencers to help you with the process.
We offer a one-year warranty (two years for some products).
Yes, the product can be removed after installation without affecting the original wiring harness of the vehicle.
We offer free returns and exchanges if there are any quality issues with the product upon receipt by the customer.
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