The Repairs Most Garages Turn Away.
ESL faults, corrupted modules, EEPROM data recovery, ignition system replacement — these are the jobs that require manufacturer-level equipment, SERMI certification, and the knowledge to use both. We handle all of them on-site.
Four Specialist Capabilities. All On-Site.
Modern vehicles are electronic problems, not mechanical ones. Select a service below to see fault codes, vehicle coverage, and exactly what our repair involves.
ESL Repair & Replacement — Electronic Steering Lock
Mercedes-Benz FBS3 & FBS4 · W204, W205, W212 and more · On-site diagnosis
Specialist
▾
The Electronic Steering Lock (ESL) is a safety system built into the steering column of many modern Mercedes-Benz vehicles. When it fails, the vehicle will not start, the steering column locks solid, and most garages will tell you the car needs towing to a main dealer.
ESL failure typically presents as: steering that will not release on start-up, a “Steering Lock” warning on the dashboard, or a complete failure to enter ignition. The fault is electronic — the mechanical column is usually undamaged. Mercedes uses two generations of ESL — FBS3 and the newer FBS4. Both are now covered.
| A25407Mechanical malfunction |
| A25408Signal fault or message fault |
| A25409Component malfunction |
| A25464Implausible signal |
| 9003No feedback during unlocking |
| 9005Communication with ESL disrupted |
| B212172Start authorisation response not received in time |
| A22449Ignition lock — internal electrical fault |
| B1703Communication line to ESL open or shorted |
| B1000Internal control unit malfunction in ignition switch |
A 099 900 87 01A 099 900 94 01- More to follow soon
- Previously unrepairable by independents
- On-site — no main dealer required
| B225409Component fault — most common “Fatal Error” software block |
| B225464Implausible signal malfunction |
| B17FF00Ignition lock internal fault — triggers total immobilisation |
| B1A5500Communication with ESL has a malfunction |
| U015500Lost communication with instrument cluster |
| U100800LIN bus malfunction — EIS to ESL data line drops |
- ✓Full on-site ESL diagnostic — no guesswork, no unnecessary parts
- ✓VIN-matched replacement programming — module paired correctly to your vehicle
- ✓Post-repair ignition and steering system function test before we leave
Module Programming & Cloning
ECU, BCM, TCM and security modules · Ford, Mercedes, BMW, VAG · Second-hand module pairing
Advanced
▾
Modern vehicles use encrypted, security-paired modules — ECU, BCM, TCM, and immobiliser control units — that communicate via a unique vehicle VIN and security seed. A replacement module from a breaker’s yard or online supplier will not simply plug in and work. It will be rejected by the vehicle’s security system as unauthorised.
Correctly pairing a second-hand module requires direct access to the vehicle’s security architecture — SERMI certification and manufacturer-level tooling. Below are two real documented jobs demonstrating exactly what this involves.
The Transmission Control Module manages all automatic gearbox functions. When it fails, the vehicle may refuse to shift, enter permanent limp mode, or log faults that won’t clear with a standard reset.
- ✓Jerking or shuddering while driving
- ✓Delayed or hard gear shifting
- ✓Car stuck in neutral or one gear
- ✓“Transmission Fault Service Now” warning
- ✓Loss of acceleration or power
| P0606TCM processor fault — internal failure |
| P060AInternal control module performance |
| P0700Transmission control system fault |
| U0101Lost communication with TCM |
| U1013Invalid data from TCM |
The Body Control Module manages central locking, lighting, wipers, immobiliser, and interior communications. When it fails, the vehicle may suffer multiple electrical faults across systems simultaneously.
- ✓Random electrical faults with no obvious cause
- ✓Central locking not responding correctly
- ✓Wipers or lights behaving erratically
- ✓No crank or immobiliser-related problems
- ✓Unexplained battery drain
| U0140Lost communication with BCM |
| U3000Control module internal electronic failure |
| U0001High-speed CAN communication bus fault |
| B10D7Control module configuration error |
| B121DBCM internal failure |
- ✓ECU cloning — copy data from failed unit to replacement, preserving vehicle-specific calibration
- ✓BCM programming & VIN pairing
- ✓Immobiliser module replacement & synchronisation
- ✓New module adaptation — supplier-sourced units paired on-site
- ✓ECU, TCM, BCM programming — Ford, BMW, VAG group and more
- ✓All work carried out with SERMI-certified access
EEPROM Bench Jobs & Data Recovery
Chip-level reading, writing & data extraction — when software access is not possible
Specialist
▾
An EEPROM chip is the physical memory component inside vehicle control modules, instrument clusters, and immobiliser units. It stores critical vehicle data — mileage calibration, security codes, VIN bindings, and key authentication data.
When a module fails or has been security-locked, standard software diagnostic tools cannot access or recover its data. EEPROM bench work requires physically reading the chip at hardware level — soldering it from the PCB, reading it with specialist equipment, and writing it back. This is the deepest level of vehicle electronic work available outside a main dealer.
- ✓EEPROM reading from instrument clusters, ECU, BCM and immobiliser units
- ✓Key pin code extraction — enables key programming without original key
- ✓Odometer data recovery following cluster failure or replacement
- ✓Security code extraction for locked modules
- ✓Data migration — copying EEPROM content from failed unit to replacement
- ✓Full bench work available on-site
Ignition Repair & Replacement
VAG Group · Ford · Hyundai · Kia · All makes — stiff ignitions, snapped keys, electronic steering lock faults
Mobile
▾
Ignition barrel problems are more common than most drivers expect — and more complex than they appear. Many modern vehicles integrate the immobiliser reader directly into the ignition barrel or steering lock unit, meaning a replacement must be correctly paired to the vehicle’s ECU and key system. An unqualified replacement without re-pairing will result in a no-start or permanent immobiliser lockout.
| 02811Electronic steering column lock — implausible signal |
| 02823Requirements for locking not met |
| 00446Function limitation due to under-voltage |
| 00576Steering column lock — no communication |
| 01176Key signal too low |
- ►Check Steering Lock
- ►Steering Lock Malfunction
- ►Press Start Button Again
- ►Key Not Detected
- ►Check Smart Key System
- ✓Broken key extraction from ignition barrel — without barrel damage where possible
- ✓Ignition barrel strip, clean and rebuild for stiff or worn tumblers
- ✓Full ignition barrel replacement — supply and fit
- ✓Immobiliser re-pairing after barrel replacement
- ✓Ignition switch replacement — starting circuit faults
- ✓Cars, vans and light commercial vehicles — all makes