SIM266 – Mercedes A-Class (W169) ECU Repair
Have you got a petrol Mercedes A-Class (2004-2012) that struggles to start, only to then cut out straight away? This is a frequent problem for owners and it stems from a defective Siemens SIM266 engine ECU.
Shop Now – Mercedes A-Class ECU Repair
The commonly-failing SIM266 is fitted to 1.5L and 1.7L petrol W169 models, and it causes a huge range of issues for owners when defective. You’ll also find these ECUs in first-generation B-Class vehicles (2004-2011) fitted with the same engine types.
When failure strikes, you’ll find the Mercedes A-Class may initially start, but then cuts out just seconds later. As well as this, a defective SIM266 ECU will trigger the engine warning light and cause a P0605 code to store. If left unresolved, the SIM266’s internal malfunction will inevitably render the vehicle undrivable and you’ll be unable to communicate diagnostically with the lifeless ECU.
As starting issues and a P0605 code (control module fault) are vague symptoms, you should send your Mercedes A-Class ECU to us for professional testing to avoid any unnecessary repair costs. Just fill out our test form to get started.
Why does the SIM266 cause Mercedes A-Class vehicles to start and then cut out?
The reason these units so frequently cause significant performance issues for owners is because they consist of poor-quality internal components that degrade faster than you’d expect them to.
This is why you might initially experience intermittent issues, like the engine starting and cutting out, before experiencing a complete no-start condition.
SIM266 Mercedes A-Class ECU: repair or replace?
When met with the aforementioned symptoms, many owners are recommended to completely replace their faulty ECU with a brand new one. However, this is far from the most effective solution.
As we mentioned, the cause of failure stems from poor-quality internal components that have broken down and are no longer functioning correctly. If you purchase another SIM266 you’re simply reinstalling the same components to your Mercedes A-Class, leading you to scramble around for another ECU repair before long.
Instead, we’d always recommend having your SIM266 professionally tested, before having it comprehensively remanufactured. This way you confirm the source of your problems and resolve them for good.
Our SIM266 solution
Thankfully, this is the very service we provide and it costs significantly less than a brand new ECU from the dealership.
Our vastly-experienced technicians utilise hardware-in-the-loop testing rigs to examine your control module and pinpoint the root cause of failure. We then go much further than standard Mercedes A-Class ECU repairs by completely rebuilding your unit using higher than OEM-standard components and state-of-the-art remanufacturing equipment.
We also offer a longer warranty than any other Mercedes A-Class ECU repair service too – you’ll receive unlimited-mileage lifetime cover as standard if you choose to have us rebuild your SIM266.
Our process takes just 2-3 working days and avoids the need to recode the unit back to your vehicle. Don’t just have your Mercedes A-Class ECU repaired, have it remanufactured by the industry experts. Find our test form to get started.
Common failure symptoms:
- Engine cutting out
- Difficulty starting
- No start
- Engine light on
- No communication with ECU
- Loss of power
- Rough idle
- Misfires
Common fault codes:
- P0605 – Control Module Fault ROM Error
- P0604 – Control Module Fault RAM Error
- P0606 – Control Module Internal Fault
Test and rebuild:
We test these control modules on our state-of-the-art rigs, which can examine your SIM266 under realistic operating conditions. This allows us to uncover even the most intermittent of failure modes and get to work rectifying it.
Programming:
Our process completely retains coding information meaning no additional cost is required to return the rebuilt ECU back to your vehicle.
Quality:
We pride ourselves on providing an affordable but exceptional service to the industry. This is exemplified by our defect rate of just 0.49%, which has helped us become the chosen provider of automotive remanufacturing services for specialists worldwide.
Warranty:
Lifetime unlimited mileage*
How do I get my unit rebuilt?
To pay for the rebuild click the Shop Now link above, select your part number and click: Get yours rebuilt.
Print the payment/booking confirmation email.
Package the SIM266 inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box).
Send us your package by tracked courier (the shipping instructions are on the confirmation email).
Once received we will test, rebuild and return your Mercedes A-Class ECU with an unlimited mileage lifetime warranty. (if your unit turns out not to be faulty then we will refund your payment less a small testing fee and return shipping)
What if I don’t want to pay up front?
This is not a problem, if you prefer this option then follow the following steps:
Fill in and submit this test form.
Print the booking confirmation email.
Package the SIM266 inside a sturdy box with plenty of packaging material (make sure you include your confirmation email in the box).
Send us your package by tracked courier (the shipping instructions are on the confirmation email).
Once received, we will test your control module and call you to advise on the outcome of testing, if your unit is faulty and you choose to go ahead with the rebuild then we will take payment over the phone using a debit/credit card.
We will then rebuild your ECU and return it to you with an unlimited mileage warranty.
If you require further information regarding this Mercedes A-Class ECU then please contact us.