The easiest solution would be to go by production date. there is a sticker on the driver side door as well only visible when door is open if I remember correctly..
Table of Contents
What is BMW ECU?
BMW has an electronic control unit known as ECU that controls the engine’s functions. It is responsible for controlling multiple operations, such as throttle, fueling, and ignition.
How do I know my ECU type?
Once you have located and removed your ECU you will most likely like to know what make and model ECU you have. On the ECU there will be a sticker with the Make and some serial numbers. Every ECU has its own format for identifying the ECU’s model.
How do I know what ECU I have?
As further identification Honda ECUs have a software revision number inside the ECU. This is usually a two or three digit number stamped on the 28 pin ROM, or main processor. Accord and Prelude ECUs can use a letter and number code.
Can you use a different ECU in my car?
Can ECU be interchanged? The ECU of a specific car can be swapped with the ECU of another car if they are of the same year model. Some car models use the same ECU across several year models. ECU from these cars can be installed in the same compatible year model with no negative effect on the engine’s performance.
Do ECU numbers have to match?
Many ecu’s will have the same hardware number and just different software. Some part numbers are even just different calibrations for the same system.
Do you need to reprogram ECU after engine swap?
Short answer is no, you will not need to reprogram the ECM. You can swap engine and sensors over but keep your original ECM, it will work no problem.
How do I know if my ECU is fried?
- Engine Lags or Surges.
- Engine Misfires and Stalls.
- Your Car Won’t Start.
- Check Engine Light Alert.
How much is a new ECU?
The part alone can cost between $1,000 and $3,000, depending on the make and model of your vehicle. Fortunately, an ECU can be repaired or reprogrammed in many casesโthus preventing the need to actually replace an ECU.
How do you fix an ECM failure?
The most common source of ECM failure is in one of the wiring harnesses. If the wires to the transmission or fuel injectors become corroded, they can lose conductivity, leading to a failure. Fortunately, these issues can usually be resolved by replacing the corroded wires.
How do I know if I have a P28 ECU?
Model (P28/P72/etc) Take a look at the side of your ECU, you’ll see 37820-PXX-XXX. The numbers following the P, like P28 or P30 are very important. Here are some things to note about the most common variants: P05 โ Civic CX โ Most basic supported ECU.
Where do I find my ECM part number?
The ECM part number can be found on the decal on the back of your ECM.
How can I buy ECU?
Purchases can be made by calling the ECU Athletics Ticket Office at (252) 737-4500, through the Online Ticket Center, or by visiting its Minges Coliseum Box Office location. Click here for a look at the full game schedule. Copyright 2022 WITN. All rights reserved.
Can you just swap an ECM?
The answer to the question “Is it hard to replace an ECM?” is NO! The parts themselves aren’t inexpensive (as long as you’re buying them from us!), plus high quality aftermarket and OEM ECMs can be easily installed yourself.
Do you need to reprogram a used ECU?
A used ECU would have to be programmed to your vehicle, depending on make and model it can be as simple as using a diagnostic tool to program it or a lot of times it can involve swapping the contents of the internal memory from the old ECU to the new one which isn’t a job for the average garage.
How do I program my replacement ECU?
- Connect the vehicle interface cable to the OBD-II connector and turn the ignition switch to ON.
- Open the ProECU software and choose Tools then Detect Vehicle.
- Select Program Engine ECU.
- Choose Query ECU to identify the ECU version fitted to the car.
Is ECU and ECM the same thing?
ECM stands for Engine Control Module, and ECU is short for Engine Control Unit. These two acronyms represent the same component and are used interchangeably.
Can you LS swap a BMW?
Today, one of the most popular swaps for any chassis is the Chevy V8 LS platform. With their relatively inexpensive price point, easily accessible parts, and bulletproof build, the LS has been a great “entry-level” swap for BMWs the world over.
What happens if ECU fuse is blown?
When the fuse blows, the engine control unit/module loses power and is unable to control the ignition process, the throttle (drive by wire) shuts and fuel ceases to be commanded to move. No spark is commanded to fire. In short, the engine dies and the car goes nowhere.
What causes an ECU to fail?
One of the main causes is a short circuit in the wiring or in components, which can cause them to burn out. This short circuit is often caused by external influences, such as the wrong start of the car.
Can a faulty ECU be repaired?
Commonly known as an Engine Control Unit (ECU), Electronic Control Module (ECM), or a variety of other terms, the computer in your vehicle is responsible for countless functions. So, how do you fix a broken ECM? You can either repair it or have it replaced completely.
Can an ECU be reprogrammed?
The ECU/PCM can be modified/reprogrammed by a myriad of aftermarket systems, a process that is commonly called ‘Chipping’. These modifications are not designed, validated or tested for your specific vehicle and market, and will often come with various trade-offs that the aftermarket suppliers are willing to make.
How long should a car ECU last?
An ECU is meant to last the lifespan of the vehicle, or at least 100,000 with proper maintenance. The electric control unit works with the currents in the engine to balance fuel and air intake for maximum performance of the engine.
How do I reset my ECU?

Can jumpstarting a car damage the ECU?
Blown Engine Control Unit (ECU) A blown ECU can occur if there is a voltage spike when jumpstarting. This impacts the alternator and other electrical components such as the fuel pump, onboard computer and possibly the fuses.