Vehicle faults
Car Electrical Repairs
Fault finding for vehicle wiring, battery drain, no-start symptoms, key recognition and module communication faults.
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GEM Electrical & Mechanical Repairs
Professional mobile repair support across Birmingham, Wolverhampton, Walsall, Coventry and the West Midlands, focused on car electrical fault finding, ECU repair, ECU cloning, module programming, vehicle key programming and practical circuit-board diagnostics.
20 years experience
Same-day slots when available
Free diagnosis before repair
Homes, businesses and vehicles
MobileWe come to your location
LocalBirmingham and West Midlands
Multi-skillElectrical and mechanical fault finding
Clear advicePractical next steps before work starts
Repair services
Specialist car electrical, ECU and module repair support.
Choose the closest vehicle electronics service below, or send the fault details and we will point you in the right direction.
Mobile vehicle diagnostics
Mobile Auto Electrician Birmingham
Mobile fault finding for wiring, battery drain, ECU, starter, alternator and no-start problems.
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Vehicle security
Vehicle Key Programming & Immobiliser Diagnostics
Combined key programming, immobiliser diagnosis and module fault support for suitable vehicles.
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Vehicle keys
Car Key Programming
Programming support for compatible car keys, transponders and immobiliser-linked faults.
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Spare keys
Spare Car Key Programming
Spare key coding for compatible vehicles before a lost-key situation becomes urgent.
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Lost keys
Lost Car Key Replacement
Support when car keys are lost, damaged or no longer recognised by the vehicle.
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Remote fobs
Remote Key Fob Programming
Remote fob programming and diagnosis for locking, unlocking and recognition faults.
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Immobilisers
Immobiliser Fault Diagnosis
Diagnosis for immobiliser warning lights, key recognition faults and no-start symptoms.
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Vehicle electronics
ECU Repairs
ECU inspection, water damage checks, burnt track repair and component-level support where practical.
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Module programming
ECU Cloning & Module Programming
ECU cloning and module programming support for compatible replacement control units.
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ECU coding
Used ECU Replacement & Coding
Used ECU replacement checks, coding and compatibility advice for suitable vehicles.
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German vehicles
BMW / Mercedes / VAG Key & Module Support
Key, immobiliser and module support for BMW, Mercedes, Volkswagen, Audi, SEAT and Skoda.
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Hybrid vehicles
Hybrid Battery Repair
Hybrid battery health checks, NiMH module testing and repair advice for Toyota and Lexus hybrids.
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Board repairs
Circuit Board Repair
Faulty component finding, component replacement and practical PCB repairs.
View ServiceFault finder
Car electrical, ECU and module faults we can help trace.
Start with the symptom: no-start faults, warning lights, key recognition issues, ECU cloning, replacement control units or module communication problems.
Car electrical faults
Car electrical repairs Mobile auto electrician Battery drain testing No-start electrical faults Wiring and connector faults Key programmingWhy choose us
Trusted mobile repairs across the West Midlands.
Mobile service
We come to your home, workplace, business premises or vehicle when a site visit is the practical option.
Clear diagnostics
We assess the issue properly and explain the next step before repair work starts.
Broad technical experience
Electrical, mechanical and vehicle faults often overlap. That wider skill set helps diagnosis.
Fast response
Same-day and urgent repair slots are offered where diary space and parts availability allow.
What happens next
- Send the detailsTell us the fault, location, service type and add photos if useful.
- We review the jobYou get clear advice, availability and a quote where possible.
- Repair visitWe attend with the right plan and complete the repair where practical.
Latest posts
Repair advice and service updates.
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BMW, Mercedes and VAG Key and Module Faults: A Guide
Understand common key recognition, immobiliser and control-module issues affecting BMW, Mercedes and VAG vehicles.
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Hybrid Battery Warning Signs and Repair Options
Learn the warning signs of Toyota and Lexus hybrid battery deterioration, how NiMH modules are tested and what repair options may be…
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Can You Fit a Used ECU? Coding and Compatibility Guide
Before buying a used ECU, learn about part-number compatibility, immobiliser matching, coding and cloning requirements.
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ECU Cloning Explained: When Is Data Transfer Needed?
Learn what ECU cloning means, why replacement modules need compatible data and what to check before sending an ECU and donor unit.
Book or contact
Need a quote or repair visit?
Tell us what has gone wrong, where you are based and how urgent it is. We will reply with the clearest next step.
Phone / WhatsApp: 07300072614
Email: info@gemrepairs.co.uk