Porsche 12V BMS Battery Module MC9S12XET256 Cloning
Porsche 12V BMS Battery Module MC9S12XET256 Cloning: a UK mail-in bench service from fixmyecuuk in Newport, Shropshire, from £160 including free tracked return. The data in your original battery module's control electronics is transferred into a matching donor module with the same part number, so the car accepts it as your original. Typical turnaround is 1–3 working days. You can pay now or when the work is done — full refund if we can't do it.
- A vehicle lithium-ion battery module sent on its own is classed as dangerous goods (UN 3480, Class 9). Royal Mail and standard parcel services don't accept it.
- Send it with a courier service that accepts lithium batteries under the dangerous-goods rules for road transport (ADR). When you book, tell the courier it is a lithium-ion battery module and give the voltage and capacity from its label.
- Pack it in a strong, rigid box so it can't move, with the terminals taped or capped so they can't short-circuit, and use the labels and paperwork the courier asks for.
- Don't send a module that is damaged, swollen, leaking or has overheated. Damaged lithium batteries need special packaging and carriage (ADR special provision 376) — message us first.
- If you are sending only the control board, with no cells attached, tell us — ordinary tracked post may then be fine.
- We send it back the same way, by a courier that accepts lithium batteries; return carriage is included in the price.
- 1–3 working days
- 90-day warranty
- Free tracked return
- Pay now or after the job
- Original data backed up first
Can your Porsche 12V BMS Battery Module MC9S12XET256 be cloned?
Yes, for the module on this page, into a donor with the same part number — we confirm both labels from photos first. Both units must be undamaged. If it can't be done, there's no charge for the work.
Mild-hybrid (48V) battery modules and some 12V lithium batteries have their own battery management electronics (BMS). It holds the module's identity and its coding for the car, and on some models it stores a crash event that keeps the module out of use until the crash data is cleared. This service is on that control electronics — cloning its data or clearing crash data — not on the battery cells.
Which versions are covered?
We don't list individual part numbers for this service. Send a photo of the label and we'll confirm whether yours is covered before you post.
Processor: MC9S12XET256 (the chip on the board, not a part number)
Makes: Porsche
What do I need to send?
- Your original Porsche 12V BMS Battery Module MC9S12XET256 and a donor with exactly the same part number — by a courier that accepts lithium batteries (see the postage note)
- A clear photo of the label first, so we can confirm it's covered
- Your details, registration and job reference
How to pack and post your module →
How much does it cost?
from £160 for the bench work, including free tracked return to a UK address. The exact price is confirmed from your label photo before you post.
How to book — pay after the job, or pay now
Pay after the job
Post your original and the donor (same part number). When the work is done we message you the payment link, and your module goes back tracked once it's paid.
See the stepsPay now, then post
Pay now £160 – card, Apple Pay, Google PayCheck your part number matches this page before paying. If we can't do the job after bench testing, you get a full refund.
After paying, post your original and the donor (same part number) to fixmyecuuk, 16 Chester Road, Chetwynd, Newport, Shropshire, TF10 8BN with your eBay/job reference (or the name and email you paid with). Lithium battery module: courier only — see the postage note above.
Secure payment by Stripe — opens in a new tab.
- Confirm your part number (free). Send a clear photo of the label — we reply with a written quote: the exact price and what to send.
- Book and post your original and the donor (same part number). Reply to the quote to book — the quote includes our address and a short statement about your right to cancel (terms, section 7) for you to confirm. Then post it as shown in how to post your module. Lithium battery module: courier only — see the postage note above. If you're paying after the job, there's nothing to pay yet.
- We read it on the bench, then do the job. If it can't be done, we tell you and send it back with no charge for the work — and if you paid up front, you get a full refund.
- Pay (if you haven't already), then it's posted back. When the work is done we send you a card / PayPal payment link; your module goes back tracked as soon as it's paid.
Typical symptoms and fault codes
- 48V / mild-hybrid system fault after a battery module replacement
- Battery module switched off or locked after an accident (crash data stored)
- Replacement module not accepted by the car
How does it work?
- SendLabel photo first — we confirm the price and what to send. Pay now or after the job, and post it.
- We do the bench workModule read in full and backed up first, then cloned or reset and checked on the bench.
- Returned trackedNot paid yet? We send a payment link when the work is done; once paid, it goes back tracked. No charge for work we can't complete — full refund if you paid up front.
What's not included?
- Repairing, replacing or testing the battery cells
- Damaged, swollen, leaking or overheated battery modules — please don't send them
- Fitting, coding or high-voltage safety work in the car
How long does it take?
Most modules are on the bench the working day they arrive, and most jobs go back within 1–3 working days. Complex jobs, board repair and anything needing parts can take longer — we tell you before we start. Covered by our 90-day workmanship warranty, on top of your statutory rights.
More questions
Can I post a lithium battery module with Royal Mail?
No. A lithium-ion battery module sent on its own is dangerous goods (UN 3480, Class 9). Use a courier service that accepts lithium batteries under the road dangerous-goods rules (ADR), tell them what it is, and pack it as they require.
Is this an airbag (SRS) crash reset?
No. This is the crash data stored in the battery module's own control electronics. Our airbag module service is separate, and we don't do airbag crash data reset on German marques.
Also listed on our eBay shop as item 366696783725.
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