Is it dangerous to drive with a faulty ECU?

Yes, this is the central computer controlling core engine functions — significant faults here can cause the engine to run poorly, stall unexpectedly, or not start at all, so this should be diagnosed by a specialist promptly.

Can a used ECU be fitted from another vehicle?

This requires careful matching to the exact engine variant and specialist programming/synchronisation — an incorrectly matched or unprogrammed unit generally won’t work correctly.

What is the ECU made of?

A sealed electronic circuit board with a microprocessor, memory, and extensive input/output circuitry, in a weatherproof housing.

How do I check whether Engine control unit MERCEDES BENZ E250 W212 2014 fits my vehicle?

Compare OEM reference A6519007401, the listed vehicle (MERCEDES E250 2009-2016), connectors, mounting points and the photographs for this exact item.

What is the condition of Engine control unit MERCEDES BENZ E250 W212 2014?

Listed condition: Used. Current availability: 1 in stock - ready to ship. Review the item photographs and any stated defects as well.

How is Engine control unit MERCEDES BENZ E250 W212 2014 delivered and returned?

Available delivery methods, timing and price for your country are shown in the cart. Review the applicable 14-day return terms before ordering.

Engine control unit MERCEDES BENZ E250 W212 2014

Name: Engine control unit MERCEDES BENZ E250 W212 2014
Brand: MERCEDES
SKU: A6519007401
Price: 108.00 EUR
Availability: InStock

OEM: A6519007401

Disassembled car photo

Engine running

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

Details for this exact part

Code: A6519007401
OEM: A6519007401
Condition: Used
Availability: 1 in stock - ready to ship
Make, model: MERCEDES E250 2009-2016
Year: 2014
Engine: Diesel 2.2CDI 150KW 65192431250773
VIN: WDD2122821A685224

What is this part and why does it matter?

The engine control unit (ECU) is the central computer managing engine operation — fuel injection, ignition timing, emissions control, and more — based on data from numerous sensors.

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Signs of a faulty part

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

Engine won’t start or runs very poorly
Multiple, seemingly unrelated engine-related faults appearing together
Check Engine light constantly on with numerous fault codes

Installation information

Mounted in the engine bay, connecting to the extensive engine wiring harness — requires specialist programming/coding to match the specific vehicle and, often, the immobiliser system.

Frequently asked questions

The ECU needs to be correctly programmed with software matching the exact vehicle, engine variant, and often synchronised with the immobiliser system — this typically requires specialist diagnostic equipment and expertise.

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

What our customers say

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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.
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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.
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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!
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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.
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Igors K.
Front fender
October 2025