W204 spare key.
Got one working key and want a backup? Spare key programming is the simplest W204 job — fastest turnaround, lowest cost. Programmed via EIS, new key tested alongside existing one before we leave.
60-75 mins typicalSpare keys, all-keys-lost and ELV (steering lock) repair for the Mercedes C-Class W204 — saloon, estate (S204) and coupé (C204), 2007 to 2014. EIS-based key programming on the driveway. Dealer-grade software, fraction of the price.
The W204 C-Class is one of the most common Mercedes on UK roads — and one of the most common key jobs we see. Plus the notorious ELV (Electronic Steering Lock) fault that makes the car appear to have a key problem when it doesn't. We handle both.
Got one working key and want a backup? Spare key programming is the simplest W204 job — fastest turnaround, lowest cost. Programmed via EIS, new key tested alongside existing one before we leave.
60-75 mins typicalNo working key available? We can programme a fresh key from scratch by reading the EIS directly. Most W204 all-keys-lost completed on the driveway in 90-120 minutes. Mercedes dealer alternative.
EIS-direct AKLThe Electronic Steering Lock motor on the W204 is famous for failing. Symptom: car won't turn ignition, sometimes throws "Visit Workshop" message. Solution is an ELV emulator — much cheaper than a new Mercedes ELV. We fit and code on the driveway.
£600+ saved vs dealerEIS (Electronic Ignition Switch) failure shows as intermittent no-start, key-not-detected, or the car simply refuses to crank. We diagnose, repair or replace the EIS (used module adaptation possible), then programme keys to match.
EIS diagnosis & repairC204 coupé (the C-Class coupé before it became the C-Class coupé W205) and S204 estate are both based on the W204 platform — same key procedures, same EIS, same pricing. C63 AMG also covered.
All bodystyles · AMG tooCommon rebuild project — W204 parts are abundant, repairs are economical. We handle full key programming plus EIS adaptation for trade and rebuild work. Trade rates for repeat business.
Trade rates availableW204 problems frequently appear as key faults when the real issue is the ELV or EIS. We diagnose properly first — no point programming a new key if the steering lock is the actual problem.
Confirm whether you have a key problem, an EIS problem, or an ELV problem. Each is a different fix at a different cost. We read the EIS, check the ELV motor state, and only recommend what's actually needed.
Once we know what's wrong, we explain the options. Key only: cheapest. ELV emulator: mid-range. EIS replacement: highest. All explained clearly before we start, with fixed prices.
Whatever the work, we verify operation before leaving. Engine starts, locks work, ignition releases properly, no warning lights. You see the car working with the new key/parts before we pack up.
Mobile key programming covers most modern marques and immobiliser systems. These are the makes we programme keys for most often:
Don't see your make? Give us a call — Japanese, Korean, French and Italian marques are all on the list, just send the registration over and we'll confirm.
Mercedes dealers charge £450-£900 for a W204 key, plus £900-£1,400 for an ELV. DashTech does the same work on your driveway with dealer-grade software at a fraction of the price.
Lost the only key to my 2012 C220 CDI. Couldn't even unlock the doors. DashTech sorted full all-keys-lost in 100 minutes on the driveway. Programmed two new fobs. £450 all-in vs Mercedes' £900 quote.
W204 wouldn't turn the ignition — main dealer wanted £1,400 for a new ELV. DashTech fitted an ELV emulator and re-coded the keys for £350. Car works perfectly. Saved a grand.
Spare key for my S204 estate — Mercedes quoted £520. Friend recommended DashTech. £250 on the driveway in 65 minutes. Same fob, same software. No-brainer.
The quickest way to get a price is to call us — or WhatsApp with your reg and the symptoms. Most quotes back within minutes, 7 days a week.
Tap to call now 07550 006 999 7 days a week, 7am–9pm. We answer when we can; voicemails returned the same day.