HV Fuse Service Disconnect Genuine 0Z3915631B for Audi

Technical specifications

Will it fit my vehicle?

How to identify the correct unit: locate the reference number stamped on your original component or in the vehicle parts catalogue, then cross-check it against the number below before ordering. Trim and market variants exist for many applications, so the short check is worth the minute before checkout.

How to identify & confirm fitment in 4 steps

1. Locate the OE / reference number on your old part or in the vehicle parts catalogue.
2. Match it to 0Z3915631B shown on this page.
3. Send your VIN and engine code plate so our team runs an exact-fit check.
4. Receive fitment confirmation before we dispatch your order.

Cross-reference coverage for audi hv fuse and hv fuse fitment is listed above; confirm your VIN before ordering.

Product overview

Stocked for Audi and referenced by 0Z3915631B.

Why this unit sells

The strengths workshop buyers compare when searching ev pyrotechnical fuse, hv battery fuse and high voltage safety plug are listed above.

Build & materials

Built to the original equipment drawing, the HV Fuse follows the same inspection checkpoints as the reference sample. Tolerances that affect installation are held to the drawing rather than adjusted on the bench.

• Surface treated to resist corrosion in road and workshop conditions.
• Dimensional check against the reference sample before packing.

Material and build choices answer the most common hv fuse replacement and hv fuse guide questions from workshop buyers.

Applications & use cases

Suitable for Audi. HV Fuse is stocked for these markets and model families so buyers can match demand without re-checking every listing.

Technical insights

Field note. After a collision, or on some models a serious high-voltage fault, the pyrofuse fires once and the vehicle will neither drive nor charge; the battery control module stores codes such as P1609-00, P0A95-00 or U3001-00. Its function is to be the last line of defense between the HV battery and the rest of the drivetrain: on a crash signal the pyrotechnic actuator physically severs the bus within milliseconds, isolating energy that airbag-triggered deactivation alone cannot guarantee. A fired fuse is permanent and always requires replacement, never a reset.

Deep dive. Replacement is work for a technician qualified on high-voltage systems. The HV system must be fully de-energized following the manufacturer service procedure, including the service disconnect and the prescribed waiting period, and insulated tools must be used throughout. Confirm that the revision suffix of the fuse and the paired battery control module match the vehicle, since mixing revisions can prevent proper communication. Handle the pyrotechnic actuator without shock or heat, never probe the squib circuit in a way that could energize it, and verify insulation resistance and stored codes after installation.

Technical background. There is no preventive maintenance for a one-shot pyro device; it is either intact or spent. What maintenance means here is documentation and inspection: record every airbag or belt-tensioner deployment as evidence the fuse fired, check the B housing and connector area for moisture intrusion during routine HV service, and keep the mating connector clean and locked. After any collision, even a minor one, read the fault memory rather than assuming the fuse is intact. Replacement units should be stored in their original packaging, away from heat, until fitted.

Field note. When sourcing, verify the exact number 0Z3915631B rather than an older suffix, and cross-check the vehicle by VIN because Macan Electric and Audi e-tron applications share the platform but not always the same B pairing. Compare listings on three points: whether the pyrotechnic actuator and fuse body are complete, whether the compatible battery control module numbers such as 0Z3915230G are stated, and whether the related isolator numbers 0Z3915251T and 0Z3915251S are documented. Avoid parts described only by photos, since a fired or partially actuated unit looks identical externally.

Technical background. Audi rescue-services documentation describes how the HV system deactivates automatically when belt tensioners or airbags deploy, and lists additional rescue disconnection points such as the low-voltage service disconnect and the fuse-box fuse. The pyrofuse sits inside this chain as the component that actually opens the HV bus during that event, which is why high-voltage work on these vehicles follows dedicated rescue and service sheets rather than generic 12 V practice. Any workshop statement about deactivation should reference the model-specific rescue data sheet, because locations and procedures differ between generations.

Technical background. The buyer profile is narrow and professional: EV body shops handling post-collision repairs on Audi e-tron and Porsche Macan Electric models, HV-certified independent workshops, insurance assessors estimating damaged packs, and salvage rebuilders returning written-off vehicles to service. Fleet operators of electric premium cars encounter the part only through these channels. Because installation demands HV qualification and code-level verification, most buyers purchase for a scheduled repair with a VIN-confirmed application rather than for stock. Clear labeling of revision and compatibility data is what distinguishes a usable listing for this audience.

Application context. This pyrofuse sits in the high-voltage battery control circuit, so treat surrounding hardware as part of the same service event. After a deployment, inspect the HV lines and connector terminals the fuse fed for heat discoloration, and verify the battery control module and crash sensors with a diagnostic scan before ordering. Cross-reference suffix variants such as 9J1915463, 9J1915463C and 9J1915463H, because housing and connector geometry changed across platforms. A deployed unit is single-use by design; the fusible link and its igniter are never serviced separately.

Field note. Although it contains no lithium, the pyrotechnic actuator changes transport rules. Carriers commonly classify units like this as Class 1 pyrotechnic articles in the UN0503 family, requiring appropriate marking and, for air, carrier acceptance of explosive articles; many logistics providers move them by road instead. Store cartons away from heat sources, static discharge, and impact, with the igniter leads guarded as supplied. Keep the original conductive packaging until installation, and never ship a unit with a damaged or dented housing.

Field note. Only a high-voltage-qualified technician should touch this part. Preparation follows the rescue-sheet sequence: switch off ignition, pull the service disconnect tab, wait for the HV system to de-energize, and measure for zero potential with a CAT-rated meter before removing covers. Use insulated tools and Class 0 gloves, and lock the work area. Before fitting the new fuse, scan airbag control modules to confirm no stored crash event remains active, since a pending trigger signal could fire the igniter the moment the unit is connected.

Application context. Environmental stress matters more than seasons for a pyrotechnic part. Repeated freeze-thaw cycles and road salt can corrode the connector shell and mounting threads, so clean and, where specified, renew seals during installation. Humid workshops risk static and moisture ingress at the igniter interface; keep the unit in its packaging until the last moment. Never store it near heaters or in a hot vehicle cabin, since sustained elevated temperatures degrade the pyrotechnic charge over years of shelf storage.

Field note. As a collision-actuated safety component, batch traceability is essential. Require production date codes and serial numbers on each unit, plus batch certificates confirming the pyrotechnic charge specification and functional test results, so any future recall maps to your stock. Incoming inspection should verify seal integrity, connector pin condition, and the exact part suffix against the vehicle list. Log installation against VIN and batch number, and segregate stock by date code, rotating oldest first, because pyrotechnic shelf life is finite even unused.

Deep dive. Suffix letters are the main trap. The base 0Z3915631 part and its B revision serve different platform generations, and parallel numbers 9J1915463 with C and H suffixes cover further variants; a VIN check is the reliable way to select one. Physical fit can deceive: a near-identical housing may carry a different firing circuit or connector keying. Beware listings that show only a generic photo. Never install a unit from an unknown history, including salvage pulls, because a partially fired igniter is undetectable visually.

Application context. Unlike a conventional bolted fuse that can be inspected and reused after an overload event, the pyrotechnic element inside 0Z3915631B is a single-shot device. Once triggered, it permanently opens the high-voltage circuit and must be replaced before the vehicle returns to service. Workshops familiar with legacy battery isolators should therefore treat every crash-related deployment as a parts-consuming repair, not a reset. Diagnosis begins at the battery control module, where the trigger command and fuse status are recorded, and replacement always includes clearing the stored event history and re-checking system integrity.

Deep dive. Interpreting stored diagnostic entries correctly prevents unnecessary parts swaps on e-tron and Macan EV platforms. P1609-00, Crash Shut-Down Activated, indicates the pyrotechnical fuse fired in response to a crash signal and normally confirms a deployed element. P0A95-00, High Voltage Fuse, points to an open main circuit caused by the fuse itself or its trigger path. U3001-00, Control Module Improper Shut Down, can accompany low-voltage disturbances during trigger events. Reading freeze-frame data together with these codes distinguishes an actual deployment from a wiring or control-module fault, guiding whether 0Z3915631B replacement is required.

Deep dive. Warehouse handling of 0Z3915631B differs sharply from ordinary electrical spares because the unit contains a pyrotechnic charge. Stock should stay in sealed original packaging, away from heat sources, solvents, and direct sunlight, and bins must exclude welding or grinding zones with spark exposure. Avoid dropping or shock-loading cartons; an impact can arm or damage the actuator without visible marks. Rotate batches strictly first-in, first-out, and record lot numbers so any recall can be traced. Damaged packaging or units that have been dropped should be quarantined and returned rather than sold.

Field note. After installing 0Z3915631B, acceptance follows a high-voltage service routine rather than a simple fuse check. Confirm the vehicle is de-energized and locked out while connecting the unit inside the battery control module, then torque fasteners to specification and verify connector seating. Restore the system and run an insulation-resistance test on the high-voltage network before switching the vehicle on. Clear stored diagnostic trouble codes, confirm no warning lamps for the high-voltage system remain, and verify the READY state engages normally. Finally, road-test briefly and re-scan to ensure no codes return.

Application note. It is factory fitted to new-generation Audi A6 e-tron, Q6 and SQ6 e-tron EVs and Porsche Macan Electric (XAB) models from about 2024 onward.

Application note. Associated part numbers include battery isolator 0Z3915251T / 0Z3915251S and battery control module 0Z3915230G; related pyrofuse numbers 9J1915463 / 9J1915463C / 9J1915463H appear on parallel applications.

Workshop note. Typical stored fault codes after an event are P1609-00 (Crash Shut-Down Activated), P0A95-00 (High Voltage Fuse) and U3001-00 (Control Module Improper Shut Down).

Supply note. The device is a single-use sacrificial link: it combines overcurrent protection with an emergency disconnect by firing a pyrotechnic actuator that opens the HV circuit.

Supply note. The 0Z3915631B is a pyrotechnic high-voltage fuse, also called a pyrofuse, mounted in the battery control module (B) of the high-voltage system.

The engineering notes above compile verified reference, material and application data for aftermarket hv fuse and compatible hv fuse.

Quality & authority

Inspection runs on an AQL sampling plan: incoming material, in-process checkpoints and a final release check are recorded on the batch sheet.

After-sales & warranty

12 Months limited warranty against manufacturing defects. Coverage applies to correctly installed units; keep the batch date code so any claim is processed against its inspection record. Rating, mounting and service-disconnect questions are answered by our team before dispatch.

The Vidishi Auto advantage

HV Fuse — HV Fuse. Supplied under Vidishi Auto with batch traceability and trade-grade packing; volume pricing and private-label options are available on request. HV fuses and safety plugs are supplied for electric-vehicle high-voltage service programs.

Shipping & packaging

We ship worldwide to distributors and garages from China, Dongguan. Each HV Fuse is packed in a single-unit export carton. Fuses ship individually packed with terminals protected in export cartons. Tracked air or sea freight is arranged per order volume.

Bulk quantities of hv fuse supplier and hv fuse bulk order ship in mixed containers from China, Dongguan.

Cross-reference numbers

Catalog numbering for this HV Fuse: the primary reference is 0Z3915631B. When a supplier catalog lists superseded or regional formats, match on the numeric core of the code rather than the prefix, then confirm the physical fit.

Catalog cross-references for hv fuse catalog resolve to 0Z3915631B.

Frequently asked questions

Compliance disclaimer

Vidishi Auto is an independent supplier. This is an aftermarket compatible replacement, not a genuine OEM part. Brand names are trademarks of their respective owners and are used only to identify fitment.

Trade & wholesale support

Wholesale terms are quoted per market: volume breaks, mixed-SKU containers and private-label options are all handled by the trade desk. Rating and service-disconnect documentation is available on request.

Trade desk replies with quotation, MOQ and lead time in one business day.

Enquiries about wholesale hv fuse and hv fuse price receive quotations within one business day.

Rating & service notes

HV fuses are matched to the high-voltage circuit; the rating scope below is confirmed before dispatch.

• Pre-dispatch checks: the OE / reference number is matched against your old part before packing; fitment covers Audi applications.

Installation and service notes for oem hv fuse, hv fuse cross reference and best hv fuse for audi are confirmed by our technical team before dispatch.

• Fuse rating and interrupting capacity follow the published listing.
• Mounting and service-disconnect scope are confirmed with the quotation.

Workshop teams comparing sq6, 0z3915631b pyrofuse and ev service disconnect receive the pre-dispatch checklist with the quotation.

• Fuses ship individually packed with terminals protected.

Installation and service notes for high voltage battery disconnect and pyrotechnical fuse are confirmed by our technical team before dispatch.