Is it dangerous to drive with a faulty ignition switch?

Yes, this is a serious concern — a switch that intermittently cuts power while driving can shut off the engine or electrical systems unexpectedly, which is dangerous. Have this diagnosed and repaired promptly.

Does the new switch need programming?

On many modern vehicles yes, particularly if it includes the transponder immobiliser antenna — check whether coding is needed for your specific vehicle.

What is the switch made of?

A precision mechanical lock cylinder combined with an electrical switch mechanism.

What is this part and what does it do?

Full description available in the product description section above. Contact us with clarifying questions.

How do I tell if my part is faulty?

See the 'Signs of a faulty part' section above or run a diagnostic at an auto service.

Yes - all our used parts are tested before sale and sold with guaranteed quality.

When should the part be replaced?

When warning signals appear, diagnostic codes are present, or the system malfunctions.

Ignition lock MERCEDES BENZ E250 W212 2014

Name: Ignition lock MERCEDES BENZ E250 W212 2014
Brand: MERCEDES
SKU: A2129056601 A2129056701
Price: 72.00 EUR
Availability: InStock

OEM: A2129056601 A2129056701

Disassembled car photo

Engine running

Tested before shipping
Guaranteed quality
Fast delivery 3–7 days
14-day returns

What is this part and why does it matter?

The ignition switch (or ignition lock assembly) accepts the key or fob and controls power to the starter and various electrical circuits when starting the engine.

Ask a question

Not sure about compatibility? Send us a question with your car's make, model and year.

Ask about this product

Signs of a faulty part

If you notice any of the following, the part likely needs replacement:

Key won’t turn or turns with difficulty
Vehicle intermittently loses power to accessories or the engine
Key turns but nothing happens (no crank, no power)

Installation information

Requires removing the steering column shroud for access — key programming or coding may be needed after replacement.

Donor vehicle description

VIN: WDD2122821A685224
Make, model: MERCEDES BENZ E250 W212
Year: 2014
Engine: Diesel 2.2CDI 150KW 65192431250773
Transmission: 7-speed Automatic W7X700
Drive: 4WD
Equipment: LHD
Colour: 197 (OBSIDIANSCHWARZ - METALLICLACK)

213 parts from this car

Frequently asked questions

This points to worn internal contacts within the switch that no longer make reliable connection, even though the mechanical turning action still feels normal.

What our customers say

All reviews →

Price: affordable. Service: electrical equipment repair.
A
Andris B.
September 2026
Price: excellent.
D
Didier V.
August 2026
Super good! They came through with the part I needed, quickly and at a fair price! Thanks, and I definitely recommend!
I
Ilmars K.
August 2026
I ordered a Heater Blower Motor Resistor for a Toyota Avensis. Delivery took eight days from Latvia to Ireland. I installed it, and everything works perfectly. I wish this company success.
A
Aleksandr L.
Toyota Avensis
August 2026
No complaints about Evro Trans itself, everything's fine. But the delivery..... It felt like the order was being carried by turtles. 4 days from Riga to Daugavpils. Judging by the tracking, the parcel just sat somewhere behind a shed for 3 days, then they found it and delivered it the next day. I think that's why I won't be ordering there again.
P
Paul F.
June 2026
Super fast delivery of the part, and good quality of the used part. Thanks for the service.
N
Natālija I.
May 2026
I ordered antifreeze heaters and an auxiliary pump. Everything arrived quickly, the very next day, and matched the description. I'm satisfied.
J
Juris J.
February 2026
Excellent service, timely delivery, and complete transparency at every step. I highly recommend EvroTrans to anyone looking for a reliable partner!
E
Egor S.
November 2025
Bought a front fender for my car. I liked it! After payment they sent more than 20 photos of the problem areas, and it was packed very securely - took a while to unwrap.
I
Igors K.
Front fender
October 2025