UK postal module repairs · Please confirm your part number before sending. Start a repair request
0

Contact hours

Monday–Friday08:30–17:30
Saturday09:00–14:00
SundayClosed

UK time. Postal service and mobile visits by arrangement. Parts drop-off by prior arrangement. Contact us before visiting.

Contact T-Tronic on WhatsApp
Repair service by postJLR ETYAA 48V-12V DC/DC converter label L8B2-14B227-AD
Warranty on repair
Tested in-house
⏱ Turnaround confirmed on receipt
Hybrid & EV Power Electronics

Jaguar & Land Rover 48V DC/DC Converter Exchange – Reconditioned Unit

Hybrid & EV Power Electronics
Price on request
New or reconditioned – contact us for price and availability · No VAT added
● Quote first

Choose your service

Repair your unitSend us your original converter. We test it, quote it and return it.£630 Diagnostic assessmentBench tests and a written report. Deducted from an approved repair.£80 Reconditioned exchangeWe supply a tested replacement. Your faulty unit comes back to us.on requestSelected Cloning / data transferYour data moved to a compatible replacement converter.£80 Sell us your faulty converterSend the part number and photos for an individual offer.Offer
Check that the part number on your label matches the service, for example L8B2-14B227-AD. If you are not sure, send us a clear photo of the label before you order anything.

Nothing is bought online for this service. We confirm the part number, the work and the price in writing first, then send you a secure payment link. The £80 DC/DC assessment is deducted from an approved repair – a £630 repair means £550 to pay. Return delivery is agreed with you in advance.

Read customer reviews
Feedback from garages and vehicle owners
Read customer reviews →
Service overview

Professional repair, testing and return.

What you are buying: a tested, reconditioned Jaguar / Land Rover 48V–12V MHEV DC/DC converter supplied in exchange for your faulty original. Price and availability on request – contact us with your part number and we quote a reconditioned or new unit individually. The unit is reconditioned, not new.

Included

  • Identification of your part number and a compatibility check before dispatch
  • Inspection of the faulty unit you send us
  • A compatible reconditioned replacement, bench tested
  • Standard data / configuration transfer and VIN pairing where technically required and possible – no separate £80 cloning fee for the same operation
  • Diagnostic and functional checks with a test report
  • Dispatch of the finished unit, return delivery as agreed

Conditions

  • Your faulty original is required as the exchange core
  • Not every revision is interchangeable and not every unit can be cloned – confirmed from the label first
  • If data cannot be transferred, or on-vehicle coding is needed, you are told before the work goes ahead
  • If we cannot supply a compatible unit, you are told and refunded in full

What happens next

  1. Send a photo of the label (for example L8B2-14B227-AD) and your fault codes on WhatsApp or the contact form.
  2. We confirm what is possible for your part number and send a written scope and price.
  3. You approve, we send a payment link, you post the unit using our packing instructions or drop it at the lab in Rainworth by appointment.

Nothing is bought online. No VAT added – we are not VAT registered. Return delivery is agreed in advance. 12-month limited warranty – terms.

Part numbers, fault codes, test methods, reports and warranty conditions are explained in full on the Hybrid & EV electronics page: JLR 48V DC/DC – full service information.

Common faults this service may resolve

  • “Stop Safely – Electrical Fault Detected” warning
  • 12V battery not charging or repeatedly going flat
  • Vehicle fails to restart after being switched off
  • MHEV / hybrid system fault messages
  • Several unrelated warnings at once – lights, gearbox, suspension, stability control

Related fault codes: P0A94 P0D33 P0D22-16 P0D22-17 P0A9E-00 P0A9E-19 P0D25-00 P0480 U0064 U3008 U012A-00

VEHICLE FITMENT
Compatibility guide
Land Rover Defender (L663)2020-2024
Land Rover Discovery (L462)by part no.
Land Rover Discovery Sport (L550)by part no.
Range Rover (L405 / L460)by part no.
Range Rover Sport (L494 / L461)by part no.
Range Rover Velar (L560)by part no.
Range Rover Evoque (L551)by part no.
Jaguar F-PACE (X761)by part no.
Jaguar E-PACE (X540)by part no.
SystemHybrid & EV Power Electronics

Vehicle lists are identification guidance, not a fitment guarantee. Send the complete part number and hardware revision for confirmation before ordering. A similar-looking unit is not proof of compatibility.

Identification guidance

Part numbers

Identification guidance only – if your number is not listed, contact us before assuming the service is unsuitable.

K8B2-14B227-ALK8D2-14B227-AMK8D2-14B227-A*L8B2-14B227-A*L8D2-14B227-A*N8B2-14B227-AAN8B2-14B227-ABN8B2-14B227-ACN8B2-14B227-ADNK62-14B227-A*
A* means the last letter can vary (for example AA, AB, AC). Check the exact number on the label of your original unit and enter it when you order. Unsure? Send a photo on WhatsApp.
Find. Send. Fixed.

How the service works

Find your partCheck image, vehicle and part number.
Send your unitPost it or book a collection.
Initial testingWe inspect and confirm the fault.
RepairThe confirmed fault is repaired.
Final testingRetested before approval for return.
Back to youReturned with a test report.
Repair assurance

Warranty included

Service warrantyCovers the repair we carried out, for the period shown in our warranty terms.
Return for inspectionContact us before returning the unit – we guide you through the inspection.
Costs not coveredVehicle diagnosis, removal, fitting, coding and unrelated faults unless agreed.
Important: water ingress, physical damage, incorrect fitting or third-party modification may be excluded.