Mobile EEPROM programming and ECU key data services in London
EEPROM programming involves reading, modifying and writing the low-level data stored in a vehicle's immobiliser or body control module. It is a specialist procedure used when standard key programming methods are not available or have been exhausted.
- Immobiliser EEPROM read & write
- All-keys-lost recovery procedures
- Mobile — we come to you
- Specialist equipment and expertise
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When standard key programming is not enough
Most vehicle key programming is carried out through the vehicle's OBD (on-board diagnostics) port using manufacturer or aftermarket diagnostic equipment. However, certain situations — particularly all-keys-lost scenarios on older or more security-hardened vehicles — require direct access to the EEPROM chip inside the immobiliser, instrument cluster, or body control module. Our technician reads the data from the chip, extracts or generates the security tokens, and programs the new key to match without erasing or corrupting the stored vehicle data.
EEPROM programming is a precise, time-consuming procedure. It is typically used as a last resort when OBD-level programming is blocked by a lost or corrupted PIN, an anti-theft lockout, or a vehicle security system that does not support remote programming at all. We confirm suitability and pricing before beginning any EEPROM work.
A few different situations, one straightforward process
Lost Car Keys
Still have a spare? We may be able to create an additional replacement before you're left without a working key. If every key has been lost, the process can differ and additional documentation may be required.
View Lost Car Key ReplacementBroken or Damaged Car Keys
A damaged casing, worn key blade, faulty buttons or electronic problems can make your vehicle key unreliable. We assess the condition of the key and advise whether repair or replacement is more suitable.
View Key ReplacementCar Key Fob Replacement
Having trouble with your remote fob? If the buttons no longer work, the remote is damaged, or it's been lost, we can check whether a compatible replacement can be supplied and programmed.
View Key Fob RepairSpare Car Keys
Having a spare key can save you from being completely stuck if your main key is lost or damaged. If you already have a working key, ask about our spare-key options.
View Car Key CuttingDifferent vehicles, different key systems
Not sure which key your vehicle uses? Give us your vehicle make, model and registration and our team can advise you on the available options.
Standard Car Keys
Some older vehicles use straightforward mechanical keys. These may only require accurate cutting to match the vehicle lock.
Transponder Keys
Many vehicles use a transponder chip as part of their immobiliser system. The electronic chip may need programming to the vehicle, not just key cutting.
Remote Key Fobs
Remote keys combine a physical key with electronic buttons. Depending on the vehicle, replacement may involve both key cutting and electronic programming.
Smart & Keyless Keys
Modern vehicles can use proximity or smart-key systems allowing keyless entry and push-button starting. These require vehicle-specific programming equipment.
A straightforward car key replacement process
Tell Us About Your Vehicle
Basic information such as vehicle make, model, registration and your current key situation.
Get Your Quote
We'll assess the likely requirements and provide pricing information before any work begins.
Confirm Ownership
For security purposes, appropriate proof that you're authorised to request the replacement may be required.
Cutting & Programming
Where applicable, the technician cuts the replacement key and programmes the relevant electronic components.
Testing
Before completing the job, we check the replacement key and relevant functions to make sure everything works correctly.
Get a vehicle-specific quote
Pricing depends on your exact vehicle, key type and required service. Contact us for a vehicle-specific quote.
Built around convenience and reliability
24/7 Availability
Car key problems can happen at any time. Our mobile service is available around the clock for urgent key-related assistance.
Mobile Service
Instead of arranging transportation for your vehicle, we come to your location where the service is available.
Experienced Technicians
Our technicians work with different vehicle key technologies and programming requirements.
Fast Response
We aim to reach customers quickly, subject to traffic, location and technician availability.
No Standard Call-Out Charge
There's no standard charge simply for requesting attendance, subject to our current service policy.
Warranty
Eligible replacement keys and workmanship can be covered by a warranty of up to 12 months, subject to applicable terms.
Don't panic — we can explain the process
If you've lost the only key to your vehicle, replacing it can involve different procedures from creating a spare key. Depending on the vehicle, additional identification, ownership documentation and programming may be required.
Our team can explain the process and let you know what information you'll need before the technician attends.
Call 07446 980720
EEPROM programming — common questions
Need a replacement car key?
Get in touch with your vehicle details and we'll help you find the right solution.