Mercedes Sprinter Steering Lock & Ignition Faults (W906 – 2006 to 2013)

If you’re experiencing ignition or steering issues with your Mercedes Sprinter W906 (2006–2013), you’re not alone. These vehicles are known for developing faults related to the electronic steering lock (ESL) and electronic ignition switch (EIS), especially as wear and tear accumulates over time.

Common Symptoms

Owners typically report one or more of the following problems:

• Vehicle will not start – no crank, no dashboard lights

• Key won’t turn in the ignition at all

• Key turns, but takes multiple attempts before the vehicle starts

• Audible clicking sound when attempting to turn the key

• Steering wheel remains stuck in the locked position

• Remote fob stops working with central locking system

Why This Happens

The W906 Sprinter uses an electronic steering lock system, replacing older mechanical locks. With each ignition cycle, components within the steering lock and ignition module experience micro wear. Over time, this can lead to full failure of the ESL or the EIS (also referred to as the electronic ignition switch or ‘the ignition control unit’).

These components must communicate with one another – and the vehicle’s ECU – to authenticate the key. A mismatch, degraded signal, or internal motor failure in the steering lock can break this communication chain, leaving the vehicle immobilised.

Key Areas of Concern:

• Electronic Steering Lock (ESL): Powered by a micro motor, the ESL engages/disengages based on verification from the EIS and the key’s transponder. If the ESL motor fails, the steering wheel remains locked, and the ignition won’t engage.

• Electronic Ignition Switch (EIS): Receives signal from the transponder chip inside your key and verifies it with the vehicle’s internal immobiliser. Failure here means the vehicle won’t recognise the key, even if it turns.

• Sprinter Key Fobs: Contain a transponder chip for ignition and a separate circuit for remote central locking. Either or both functions can fail, often due to internal PCB (circuit board) issues, battery problems, or water ingress.

How Mr. Ignition Can Help

At Mr. Ignition, we specialise in Mercedes ignition and steering lock faults, offering a mobile, same-day service across Surrey, West Sussex, South London, and surrounding areas. Here’s what we offer for W906 Sprinter models:

• Replacement ESL units: We stock genuine and OEM-compatible ESL modules ready for same-day fitting.

• EIS diagnosis and programming: We use dealer-level diagnostic tools to accurately pinpoint whether your EIS or ESL is at fault.

• Key replacement and programming: We can cut and program new keys on-site, and we highly recommend having a spare made at the same time to avoid future downtime.

• Live tracking: You’ll receive a live location link when we’re en route so you’re never left wondering when help will arrive.

Unlike main dealers, we don’t require the vehicle to be towed in. Our mobile solution saves you time and expense while delivering the same level of service.

Technical Note

Programming a replacement ESL requires synchronisation to the vehicle’s immobiliser and VIN. A used ESL from another vehicle will not work unless virginised using advanced tools and software – a process we can perform if required, although we usually recommend a brand-new unit for reliability.

All replacement components come with a 6-month parts and labour warranty, excluding water damage, tampering, and physical abuse.

Contact Us

For professional ignition barrel replacement services in Sutton, contact Mr Ignition today. We are here to assist you with all your ignition-related needs. Call us now to schedule an appointment or for emergency roadside assistance.

Contact Information

• Phone: 020 3984 8199
• Email: info@mrignition.co.uk

Experience the reliability and convenience of Mr Ignition – your trusted experts for ignition barrel replacement services across Sutton. Your satisfaction and vehicle security are our top priorities.