Mercedes ECU 5WK90421 | A1111533679 | Plug+Play Exchange unit

Mercedes ECU 5WK90421 | A1111533679 | Plug+Play Exchange unit

Taken from a running vehicle and dry stored. - Good working order

• This ECU is supplied 'Plug & Play' on an Exchange basis - The price above includes 'Bench programming' by post - (Data transfer from your unit to this donor unit). After placing your order you will be required to send us your old unit, we will then clone your ECU data onto this donor unit, we will then send you the replacement unit which will then plug straight in and work with your existing keys with no further programming necessary. Your vehicle mileage will be unaffected & display as it should. Your central locking will still work on your remote controls & Chassis number (VIN number), codings & immobilizer PIN etc will be correct for your car.
• We also offer a separate 'Cloning service' for this type of ECU - For example if you have already sourced a replacement unit for your vehicle & are looking for a way to program it to your vehicle then we  have the solution! For more information about the services we offer on this type of ECU please click on the 'You may also like' link above.
• We also offer a vast array of other programming & refurbishing services such as Immobilizer PIN code reading, Tech2 resetting, ECU cloning, Immobilizer deletes and much more on all makes of vehicles and all kinds of electronic units such as Airbag ECUs, Instrument clusters, Body control modules, PAS units etc etc! For more details about our programming & repair services click on the 'Services' link at the top of the page & use the filters on the left of the page to find what we can do for you. If you cannot find the service you need then contact us to see if we have the solution to your cars electronic problem.

Important! – Please read! - It is essential before ordering an item that the part number of the item you are ordering matches the part number EXACTLY of the component on your car that you need to replace. Also ensure that the fault with your car is an ECU fault and your problem has not been misdiagnosed. We strongly recommend having your car diagnosed by a competent Auto-electrician or specialist garage before ordering. If we supply a faulty ECU we are happy to provide a replacement or fully refund you if a replacement is unavailable, however if your existing problem persists with your car then the fault has most probably been misdiagnosed – if you request a refund on this basis then a 20% restocking fee will be deducted from your refund & return postage will be at purchasers expense.