Mercedes EIS Repair & Replacement from £149 | FBS3 Ignition Switch Specialists

Fast, Affordable, and Professional EIS Module Repairs – Covering Surrey, South London, West Sussex and Kent

Is your Mercedes key not turning in the ignition, or is your car refusing to start? You may be dealing with a faulty Mercedes EIS (Electronic Ignition Switch). This is a common issue in vehicles using the FBS3 system. At 247 Auto Locksmith, we specialise in Mercedes EIS repair and replacement, with prices starting from just £149.

What Is a Mercedes EIS Module?

The EIS, or Electronic Ignition Switch, is an essential component of your Mercedes that authorises engine start when the correct key is inserted. If it fails, your vehicle won’t start—even if your key seems fine. These faults are particularly common in models like the W204, W207, W212, W245, and others.

Signs of a Faulty EIS Module

• The key won’t turn in the ignition

• No dash lights or vehicle response when turning the key

• The steering lock doesn’t release

• Intermittent or complete failure to start

• Immobiliser warning on the dashboard

If you’re experiencing any of these issues, we can repair or replace your EIS unit quickly and cost-effectively, without the high prices and long delays of a Mercedes dealership.

Mercedes EIS Repair and Replacement Services

• Full diagnostic of your key and EIS unit

• FBS3 system repair and reprogramming

• Plug-and-play EIS replacements

• Programming matched to your key

• Key cloning and spare key options

• Mobile call-out or fast postal service

• Same-day service is available where possible

All our work is backed by a six-month parts and labour warranty and we use genuine, OEM, and high-quality aftermarket parts to suit all budgets.

Areas We Cover

We offer same-day and mobile Mercedes ignition switch repairs across the South East of England, including:

• Surrey: Guildford, Woking, Redhill, Epsom, Reigate, and surrounding areas

• West Sussex: Crawley, Horsham, Haywards Heath

• South London: Croydon, Bromley, Sutton, Mitcham

• Kent (selected areas): Dartford, Sevenoaks, Tonbridge

We aim to reach you within one hour, where possible.

Mercedes EIS Replacement Cost

At 247 Auto Locksmith, our prices for Mercedes EIS repair or replacement start at just £149. This includes:

• Diagnosis and fault testing

• Repair or replacement of the EIS module

• Key pairing and programming

• Mobile service or postal return

• Six-month warranty on parts and labour

Compared to main dealers that can charge £800 to £2,000 or more, we offer an affordable and efficient alternative with no compromise on quality.

Postal Repair Service

We offer a secure postal repair option if you’re located outside our service area or prefer not to book a mobile call-out. Simply send your faulty EIS unit and key to us. We will perform diagnostics, complete the repair or programming, and return it ready to plug in and start the car, usually within 24 to 48 hours.

Frequently Asked Questions

What causes Mercedes EIS modules to fail?
EIS units commonly fail due to internal memory corruption, electrical spikes, water damage, or general wear over time. The result is often a key that won’t turn or a car that won’t start.

Can you repair my existing EIS module?
Yes. In many cases, we can repair and reprogram your current EIS unit, saving you the cost of a replacement.

Do you supply and program new keys?
Yes. We can clone, cut, and program spare or replacement Mercedes keys at the same time if needed.

Is your work guaranteed?
Yes. We offer a six-month warranty on all parts and labour, excluding water damage, battery issues, and physical damage.

How long does the job take?
Most mobile repairs are completed within one to two hours. Postal repairs are usually returned within 24–48 hours.

Why Choose 247 Auto Locksmith?

• No dealership wait times or costs

• Fully mobile or postal service

• Prices from £149

• RAC accredited and fully insured

• Trusted across Surrey, Kent, London and West Sussex

• 6-month warranty included

• 24/7 emergency availability

We do not charge call-out fees, and you’ll receive a live tracking link to see exactly when we’ll arrive.

Mercedes Models Covered

We provide EIS repair and replacement for most FBS3 Mercedes-Benz models, including:

• Mercedes C-Class W204

• Mercedes E-Class W212

• Mercedes CLS W218

• Mercedes GLK X204

• Mercedes SLK R172

• Mercedes B-Class W245

• And many more

Looking for “Mercedes EIS Repair Near Me”?

Whether you’ve searched for:

• Mercedes ignition switch repair

• How much does it cost to replace a Mercedes EIS?

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• Mercedes FBS3 module programming UK

• Mercedes EIS replacement near me

You’ve found the right place. 247 Auto Locksmith offers professional, affordable service with fast turnaround and expert support.

Get a Quote Today

Call us now on 07921 365 247, send us a WhatsApp message, or fill out our online form to get a free, no-obligation quote. No upfront payment needed between 8 am and 8 pm.

Visit: www.247autolocksmith.co.uk