{"id":2821,"date":"2025-06-25T20:50:25","date_gmt":"2025-06-25T20:50:25","guid":{"rendered":"https:\/\/fenixas.no\/?page_id=2821"},"modified":"2026-10-15T17:49:00","modified_gmt":"2026-10-15T17:49:00","slug":"tesla-batteri-reparasjon","status":"publish","type":"page","link":"https:\/\/fenixas.no\/en\/tesla-batteri-reparasjon\/","title":{"rendered":"Tesla Battery Repair"},"content":{"rendered":"

Home<\/span><\/a><\/div><\/div><\/div>

Oslo \u00b7 H\u00f8nefoss \u00b7 Jevnaker \u00b7 Customers across Norway<\/p>\n<\/div>

Tesla battery repair.
Model 3, Y, S and X.<\/em><\/h1><\/div>

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.<\/p>\n<\/div>

Get free battery diagnosis \u2197<\/span><\/a><\/div>
Call us \u2197<\/span><\/a><\/div>

Warranty on work performed \u00b7 Customers across Norway<\/p>\n<\/div><\/div><\/div>

\"Tesla<\/span><\/div>

EV FENIX \/ BATTERY SPECIALISTS<\/p>\n<\/div>

FROM WARNING TO VERIFIED REPAIR<\/p>\n<\/div>

Precision at cell and module level.<\/h3><\/div>
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Diagnosis \u00b7 repair \u00b7 testing<\/p>\n<\/div><\/div><\/div><\/div><\/div>

Latest development at EV Fenix<\/p>\n<\/div>

Battery repair for
Tesla Model 3 and Model Y.<\/h2><\/div>

Diagnosis \u00b7 cell replacement \u00b7 validation<\/p>\n<\/div><\/div><\/div>

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.<\/p>\n<\/div><\/div><\/div>

Diagnosis at cell and module level<\/h3><\/div>

We use measurements and available diagnostic data to assess the fault and repair suitability.<\/p>\n<\/div><\/div><\/div>

Cell extraction<\/h3><\/div>

When targeted cell repair is appropriate, we extract the relevant cells from the module.<\/p>\n<\/div><\/div><\/div>

Cell replacement<\/h3><\/div>

Faulty cells are replaced within an agreed repair scope.<\/p>\n<\/div><\/div><\/div>

Validation after repair<\/h3><\/div>

We check the outcome with measurements and software developed in-house before return.<\/p>\n<\/div><\/div><\/div>

Tesla Model 3 battery repair<\/h3><\/div>

We assess battery faults, charging limitations and reduced range, and investigate whether targeted repair is suitable.<\/p>\n<\/div><\/div><\/div>

Tesla Model Y battery repair<\/h3><\/div>

We investigate the specific battery and agree diagnosis, repair and verification based on the findings.<\/p>\n<\/div><\/div><\/div>

Request free Model 3\/Y remote diagnosis \u2197<\/span><\/a><\/div>
Speak with a battery specialist \u2197<\/span><\/a><\/div><\/div><\/div>

Repair suitability depends on battery type, condition and the extent of the fault. We assess each battery before recommending further work.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

From symptom to cause<\/p>\n<\/div>

What can we help with?<\/h2><\/div><\/div><\/div>

Battery and monitoring system<\/h3><\/div>

Diagnosis of cells and modules, voltage measurement, BMS\/BMB and wiring. Balancing or component replacement where supported by measurements.<\/p>\n<\/div><\/div><\/div>

Isolation, sealing and contactors<\/h3><\/div>

Isolation measurements, contactor checks and investigation of moisture, corrosion and leaks. Cleaning, protection and testing are included as required.<\/p>\n<\/div><\/div><\/div>

Start without moving the car.<\/h3><\/div>

Remote diagnosis can provide useful insight before the car reaches the workshop.<\/p>\n<\/div>

How remote diagnosis works \u2197<\/span><\/a><\/div><\/div><\/div><\/div><\/div>

From our workshop \u00b7 Tesla Model Y<\/p>\n<\/div>

One cell.
A targeted repair.<\/h2><\/div>

A documented Model Y cell replacement at EV Fenix: extraction, replacement, fine-tuning and testing with our in-house software.<\/p>\n<\/div><\/div><\/div>

Diagnostic evidence<\/p>\n<\/div>

Measurements show where to investigate further.<\/h3><\/div>

We assess battery data alongside module measurements. The repair scope follows the findings in the specific case.<\/p>\n<\/div>

TESLA MODEL Y<\/p>\n<\/div>

SINGLE CELL<\/p>\n<\/div>

EV FENIX<\/p>\n<\/div>

\"Module<\/a><\/span><\/div>

Module overview in our in-house software<\/h3><\/div>

Voltage and variation between bricks form part of the diagnostic evidence.<\/p>\n<\/div><\/div><\/div>

\"Opening<\/a><\/span><\/div>

Cell extraction<\/h3><\/div>

The opening after extraction of one cell from the Model Y module.<\/p>\n<\/div><\/div><\/div>

\"Tesla<\/a><\/span><\/div>

Cell replacement<\/h3><\/div>

The area after the replacement cell has been installed.<\/p>\n<\/div><\/div><\/div>

\"Tesla<\/a><\/span><\/div>

Fine-tuning and measurement<\/h3><\/div>

The module on the workbench with measurement equipment connected.<\/p>\n<\/div><\/div><\/div>

Verification after cell replacement<\/p>\n<\/div>

Repair is followed by testing.<\/h3><\/div>

We use measurements and our in-house software to check the outcome. This is a recording from the test after this cell replacement.<\/p>\n<\/div>

\"Measurement<\/a><\/span><\/div>

Test after repair<\/h3><\/div>

Recorded voltage response from the test after cell replacement, shown in our in-house software.<\/p>\n<\/div><\/div><\/div>

Repair suitability is assessed for each battery. Start with remote diagnosis and receive our assessment and an offer by email.<\/p>\n<\/div>

Request free remote diagnosis \u2197<\/span><\/a><\/div>
Talk to us about your battery \u2197<\/span><\/a><\/div><\/div><\/div><\/div><\/div>

How it works<\/p>\n<\/div>

You know what happens.
At every step.<\/em><\/h2><\/div>

A clear assessment first. A concrete offer before you decide on further work.<\/p>\n<\/div><\/div><\/div>

Get in touch<\/h3><\/div>

Call, email or use the contact form.<\/p>\n<\/div><\/div><\/div>

Remote diagnosis<\/h3><\/div>

For Tesla we review logs and warnings with your authorization.<\/p>\n<\/div><\/div><\/div>

Result and offer<\/h3><\/div>

You receive a written assessment and an offer for further diagnosis or repair by email.<\/p>\n<\/div>

See an example email \u2197<\/span><\/a><\/div><\/div><\/div>

Delivery or transport<\/h3><\/div>

Once the next step is agreed, we arrange delivery or transport.<\/p>\n<\/div><\/div><\/div>

Targeted repair<\/h3><\/div>

We investigate the battery in the workshop and carry out the agreed work.<\/p>\n<\/div><\/div><\/div>

Test and return<\/h3><\/div>

Work is verified before the car is returned, with a warranty on the work performed.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

Warnings and fault codes<\/p>\n<\/div>

Have you seen a BMS warning?<\/h2><\/div>

A fault code is a starting point for diagnosis. It alone does not establish the cause or the appropriate repair.<\/p>\n<\/div><\/div><\/div>

<\/i><\/i><\/span>BMS_f107 \/ BMS_w107 \u2014 Voltage sensor and measurement chain<\/span><\/a><\/h3><\/div>
\n

We assess the warning alongside logs and relevant measurements. Attach a photo or enter the warning in the contact form.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

<\/i><\/i><\/span>BMS_f123 \/ BMS_w123 \/ BMS_w142 \/ BMS_w158 \u2014 Isolation-related warnings<\/span><\/a><\/h3><\/div>
\n

We assess the warning alongside logs and relevant measurements. Attach a photo or enter the warning in the contact form.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

<\/i><\/i><\/span>BMS_u018 \/ BMS_u029 \/ BMS_w064 \/ BMS_w164 \u2014 Charging limitation and imbalance<\/span><\/a><\/h3><\/div>
\n

We assess the warning alongside logs and relevant measurements. Attach a photo or enter the warning in the contact form.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

<\/i><\/i><\/span>BMS_u008 \u2014 Reduced power and limp mode<\/span><\/a><\/h3><\/div>
\n

We assess the warning alongside logs and relevant measurements. Attach a photo or enter the warning in the contact form.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

<\/i><\/i><\/span>BMS_w129 \/ BMS_w090 \u2014 Connectors, wiring and communication<\/span><\/a><\/h3><\/div>
\n

We assess the warning alongside logs and relevant measurements. Attach a photo or enter the warning in the contact form.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div>

Read about Tesla Service Mode \u2197<\/span><\/a><\/div><\/div><\/div><\/div><\/div>

Frequently asked questions<\/p>\n<\/div>

More clarity.
Less uncertainty.<\/h2><\/div>

Have another question? Get in touch and we can look at it together.<\/p>\n<\/div><\/div><\/div>

<\/i><\/i><\/span>Does the entire battery need replacing?<\/span><\/a><\/h3><\/div>
\n

Not necessarily. Some faults can be repaired at module or component level. We assess this after diagnosis and measurements.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

<\/i><\/i><\/span>How much does a battery repair cost?<\/span><\/a><\/h3><\/div>
\n

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.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

<\/i><\/i><\/span>How does free Tesla remote diagnosis work?<\/span><\/a><\/h3><\/div>
\n

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.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

<\/i><\/i><\/span>Can you help if the car is far away?<\/span><\/a><\/h3><\/div>
\n

We help customers throughout Norway. Tell us where the car is located so we can discuss transport with you.<\/p>\n<\/div><\/div><\/div><\/div><\/div>

<\/i><\/i><\/span>Is there a repair warranty?<\/span><\/a><\/h3><\/div>
\n

Yes, a warranty is provided on the work performed. Terms for your specific repair are included in the offer.<\/p>\n<\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div><\/div>

We start by listening<\/p>\n<\/div>

Let us take a closer look at your Tesla.<\/h2><\/div>

Start with a free consultation. We review your information and help you take the next step.<\/p>\n<\/div>

Prefer to speak with us?<\/p>\n<\/div>

+47 40298088<\/span><\/a><\/div>
fenix@fenixas.no<\/span><\/a><\/div>

Enquiries are reviewed between 08:00 and 10:00.
We reply within 24 hours.<\/p>\n<\/div>

Jevnaker. Customers across Norway.<\/h3><\/div>

Kirkegata 2, 3520 Jevnaker
Transport can be discussed with your offer.<\/p>\n<\/div>

Get directions to the workshop \u2197<\/span><\/a><\/div><\/div><\/div>
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