Oslo · Hønefoss · Jevnaker · Customers across Norway

Tesla battery repair.
Model 3, Y, S and X.

Charging problems, reduced range or a battery warning? We diagnose and repair Model 3, Y, S and X. Our latest development includes cell extraction, replacement and validation using software developed in-house.

Warranty on work performed · Customers across Norway

Tesla Model Y battery module on a test bench with measurement leads connected.

EV FENIX / BATTERY SPECIALISTS

FROM WARNING TO VERIFIED REPAIR

Precision at cell and module level.

Diagnosis · repair · testing

Latest development at EV Fenix

Battery repair for
Tesla Model 3 and Model Y.

Diagnosis · cell replacement · validation

Our latest development covers diagnosis and repair of Model 3 and Model Y batteries, including cell extraction, cell replacement and validation with software developed in-house.

Diagnosis at cell and module level

We use measurements and available diagnostic data to assess the fault and repair suitability.

Cell extraction

When targeted cell repair is appropriate, we extract the relevant cells from the module.

Cell replacement

Faulty cells are replaced within an agreed repair scope.

Validation after repair

We check the outcome with measurements and software developed in-house before return.

Tesla Model 3 battery repair

We assess battery faults, charging limitations and reduced range, and investigate whether targeted repair is suitable.

Tesla Model Y battery repair

We investigate the specific battery and agree diagnosis, repair and verification based on the findings.

Repair suitability depends on battery type, condition and the extent of the fault. We assess each battery before recommending further work.

From symptom to cause

What can we help with?

Battery and monitoring system

Diagnosis of cells and modules, voltage measurement, BMS/BMB and wiring. Balancing or component replacement where supported by measurements.

Isolation, sealing and contactors

Isolation measurements, contactor checks and investigation of moisture, corrosion and leaks. Cleaning, protection and testing are included as required.

Start without moving the car.

Remote diagnosis can provide useful insight before the car reaches the workshop.

From our workshop · Tesla Model Y

One cell.
A targeted repair.

A documented Model Y cell replacement at EV Fenix: extraction, replacement, fine-tuning and testing with our in-house software.

Diagnostic evidence

Measurements show where to investigate further.

We assess battery data alongside module measurements. The repair scope follows the findings in the specific case.

TESLA MODEL Y

SINGLE CELL

EV FENIX

Module overview showing cell voltages in EV Fenix battery diagnostic software.

Module overview in our in-house software

Voltage and variation between bricks form part of the diagnostic evidence.

Opening left after extracting a cell from a Tesla Model Y battery module.

Cell extraction

The opening after extraction of one cell from the Model Y module.

Tesla Model Y battery module with a replacement cell.

Cell replacement

The area after the replacement cell has been installed.

Tesla Model Y battery module on a test bench with measurement leads connected.

Fine-tuning and measurement

The module on the workbench with measurement equipment connected.

Verification after cell replacement

Repair is followed by testing.

We use measurements and our in-house software to check the outcome. This is a recording from the test after this cell replacement.

Measurement graphs from battery module testing after repair.

Test after repair

Recorded voltage response from the test after cell replacement, shown in our in-house software.

Repair suitability is assessed for each battery. Start with remote diagnosis and receive our assessment and an offer by email.

How it works

You know what happens.
At every step.

A clear assessment first. A concrete offer before you decide on further work.

Get in touch

Call, email or use the contact form.

Remote diagnosis

For Tesla we review logs and warnings with your authorization.

Result and offer

You receive a written assessment and an offer for further diagnosis or repair by email.

Delivery or transport

Once the next step is agreed, we arrange delivery or transport.

Targeted repair

We investigate the battery in the workshop and carry out the agreed work.

Test and return

Work is verified before the car is returned, with a warranty on the work performed.

Warnings and fault codes

Have you seen a BMS warning?

A fault code is a starting point for diagnosis. It alone does not establish the cause or the appropriate repair.

We assess the warning alongside logs and relevant measurements. Attach a photo or enter the warning in the contact form.

We assess the warning alongside logs and relevant measurements. Attach a photo or enter the warning in the contact form.

We assess the warning alongside logs and relevant measurements. Attach a photo or enter the warning in the contact form.

We assess the warning alongside logs and relevant measurements. Attach a photo or enter the warning in the contact form.

We assess the warning alongside logs and relevant measurements. Attach a photo or enter the warning in the contact form.

Frequently asked questions

More clarity.
Less uncertainty.

Have another question? Get in touch and we can look at it together.

Not necessarily. Some faults can be repaired at module or component level. We assess this after diagnosis and measurements.

The price depends on the fault and the scope of work. After remote diagnosis you receive a written assessment and an offer for further diagnosis or repair.

We need your registration number and the email address used in the Tesla app. You authorize the request with Tesla. We then review available logs and email the result and offer.

We help customers throughout Norway. Tell us where the car is located so we can discuss transport with you.

Yes, a warranty is provided on the work performed. Terms for your specific repair are included in the offer.

We start by listening

Let us take a closer look at your Tesla.

Start with a free consultation. We review your information and help you take the next step.

Prefer to speak with us?

Enquiries are reviewed between 08:00 and 10:00.
We reply within 24 hours.

Jevnaker. Customers across Norway.

Kirkegata 2, 3520 Jevnaker
Transport can be discussed with your offer.

Diagnosis result and repair offer

Illustrative email · not a real customer case

From: EV Fenix AS <fenix@fenixas.no>

Your remote diagnosis — assessment and next step

Hello,

We have reviewed the available logs following your authorization. Here is our assessment and the proposed next step.

What we found

An explanation of relevant warnings and data, with screenshots. We also describe what still needs confirmation.

Recommended next step

A specific description of further diagnosis or repair appropriate to the findings.

Offer

Scope, price, any conditions and warranty terms are set out in the offer for your car. This example does not specify a price.

Your decision

Reply to the email if you would like to proceed. We clarify the work and arrange delivery or transport.

Kind regards
EV Fenix AS

This example shows content and sequence. The workshop supplies findings and prices for the specific case.

Approved workshop for HV battery repair

Norwegian Public Roads Administration

Diagnosis before a decision

Free Tesla remote diagnosis

Oslo · Hønefoss · Jevnaker

Helping customers across Norway