Battery Fuse requires replacement soon

Tesla "Battery Fuse requires replacement soon" Guide to Fix it, Cost, Book Workshop (BMS_u031, BMS_u032)

1. Introduction

1.1 What does this alert mean?

Battery Management System (BMS) in car has identified that high voltage battery pyrotechnic fuse is closer to end of its lifespan and need to replace at earliest convince.

Tesla Battery Fuse requires replacement soon

1.1 How long life has pyro fuse?

Pyro Fuse has lifespan around 8 years. If car is around 7/8 years old. There are chances to get alert "Battery Fuse requires replacement soon", "BMS_u031_ReplaceSmartFuseSoon", BMS_u032".

Battery Fuse requires replacement soon

1.2 Why car need Pyro Fuse in Tesla Models?

It prevents short circuit or fire in the event of car crash, accident etc.

2. Action to Do

  • It need to replace Pyro Fuse.
  • Fuse must be replaced with new self-powered hybrid pyro fuse.
  • Book an appointment to replace Fuse. Appointment to replace Fuse
  • It is recommend to replace Battery Fuse from Expert/Specialist, who have been trained to work on high voltage car.

3. Type of Pyro Fuse?

      3.1 Battery Powered Fuse
        Tesla Battery Powered Pyro Fuse
            3.2 Self Powered Fuse
              Self-Powered Pyro Fuse

                Battery Powered Fuse should be replaced with Self/Current Powered fuse.

                4. Cost to replace

                Car Under Warranty:

                Please connect to Tesla. Please find out more details about Tesla Warranty. Link

                Car is not anymore Under Warranty:

                Replacement cost can vary according to region/country/city, Type of Workshop in between 300-700 dollar. If you are looking for best affordable workshop. Please have a look in workshop locator or contact us.  (Additional Info: You can find different Tesla Repair, Service Prices in your region/country/city. Please have a look on another guide. Link)

                4.1 Labor Cost

                4.1.1 Car with Battery 2.0

                It will not take long to replace pyro fuse for car with battery 2.0. Fuse is located below the High Voltage Battery. It will take around 0,54 hrs to replace & will cost labor around 115-150. Labor cost could vary depend on type of workshop, location etc.

                Tesla Battery Fuse requires replacement soon Battery 2.0 Labor Cost

                4.1.2 Car with Battery 1.0.

                It will take longer to replace fuse for car with battery 1.0. Fuse is located on top of the high voltage battery. It need to drop the whole battery pack to replace the Fuse. It takes a long time and it is expensive. Please contact us if you are looking for workshop.

                4.2 Part Cost

                Pyro Fuse will cost around 175.

                Tesla DISCONNECT,PYROTECHNIC,CUR POWERED Part Cost

                Tesla Part Number: 1111313-00-F (Please make sure correct part number for your model. If need correct part number for your model. Please contact us or have a look in Tesla EPC Catalog.

                Part Name: DISCONNECT,PYROTECHNIC,CUR POWERED,2000A
                Tesla Self-Powered Pyro Fuse

                5. Buy Pyro Fuse

                If you would like to buy Pyro Fuse. Please Contact Us or check out part in our part collection list.

                6. Book an Online Appointment to Replace Pyro Fuse with Affordable Tesla Independent Workshop

                If you would like to book an appointment for replacement. Please contact us or find an Workshop in our Workshop Locator and book an Appointment.

                7. Fuse Cover Upgrade

                Tesla original fuse cover corrode with time. After corrosion, it could enter water inside pack and will create internal isolation. In some case, it could destroy battery and might need to replace new high voltage battery pack, which could cost until 17,000 thousands of dollars/euro. It is highly recommend to upgrade fuse cover as a preventative maintenance to avoid huge repair cost, which could cost from 3,500 to 17,000 thousands.

                There are some aftermarket fuse cover available with different material (Stainless Steel, Anodized aluminum etc), which prevent from corrosion. Please check out more details in another guide (How to do, how much it cost, buy online fuse cover etc.) Link

                Fault Code

                Possible alert code

                You might have received one of following alert.

                1. BMS_u031
                2. BMS_u032
                3. BMS_w176
                • BMS_u031
                Tesla BMS_u031 Battery Fuse requires replacement soon
                • BMS_u032
                Tesla BMS_u032 How to Fix
                • BMS_w176
                Tesla BMS_w176 Battery Fuse need replacement soon

                8 How to Replace Tesla Pyro Fuse

                Warning: It is recommend to replace Pyro Fuse from Expert/Specialist, who have been trained to work on high voltage car. It could be dangerous. 

                Replacement process for Model 3 & Y is almost similar except few difference (Seat removal process). This process can vary depend on which model do you have and which battery version 1 or 2.

                If you need and appointment. Please book an online Appointment.

                8.1 Steps to replace Pyro Fuse

                Following steps are only for information purpose. Please use official Service Manual
                • Disconnect 12V battery (negative terminal first)
                • Disconnect first responder loop
                • Use proper PPE (Personal Protective Equipment)
                • Check absence of high voltage
                • Use fully insulated tool to replace pyro fuse
                • Reconnect first responder loop
                • Reconnect Low Voltage Battery
                • Reconfigure the Car 
                  • Car need to reconfigured depending on which Micro Controller Unit (MCU) is equipped in car.
                • Coolant Air Purge

                  Battery 1.0

                  Tesla Battery Fuse requires replacement soon Model S Battery 1.0

                  Procedure to replace, if your car has battery 1.0.

                  Battery 2.0

                  Tesla Battery Fuse requires replacement soon Model S Battery 2.0

                  Procedure to replace, if you car has battery 2.0

                  9. Online Support

                  In case, if you need any support/help. We also provide online support, consulting etc. Please Contact Us Phone/Whats App +49(0)15226242038

                  10. Find, compare and Book best affordable workshop to replace Fuse

                  If are you looking for best workshop who is expert to fix such issue with good price. Please contact us. We will be happy to organize an appointment. Else, please find, compare and book best workshop in Workshop Locator

                  11. Book an Appointment

                  If you would like to book an appointment.

                  Book an Appointment to Fix an affordable Workshop

                  Buy New/Used Spare Parts

                  If you would like to buy spare parts. Please have a look in our catalog or Contact Us Phone/Whats App +49(0)15226242038

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                  Repair Shop Owner/Mechanic

                  If you are workshop owner/mechanic and offer Tesla Repair/Service and would like to add your workshop in our list. Please have a look in our Become a Partner Page or contact us.

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                  13 FAQ

                  1. Does it cover under warranty?

                  If car is still under warranty. Please contact to Tesla.

                  2. car not under Warranty?

                  We recommend you to do with Independent Workshop. You can find best affordable workshop near you in Workshop Locator

                  If you are looking for Workshop which offers such services. Please Contact Us.

                  3. Is it okay to drive the car?

                  It is hard to say how long car can drive. It could shuts down completely which will be expensive repair. It is recommend to book an appointment to change Pyro Fuse. 

                  4. Is it safe to drive car.

                  Yes, however you should replace fuse ASAP.

                   

                  Source: Tesla Service Manual

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                  Disclaimer: Tesla, Inc. was not involved in the creation of this document. Tesla did not provide us any info. Tesla did not edit, review or authorize us. We gather this information from Tesla official website and other resources.

                  Note: It is your responsibility to double check and confirm that the procedures/info mentioned in this blog are applicable to your specific car before performing them. Please contact us or our workshop partner to make sure/confirm. We will be happy to help you.