BSI block: definition, role, work
Content
The BSI for the Intelligent Servitude Box is an electronic control unit. It manages your car's electronic information and therefore allows it to function properly. Thanks to the BSI box, your interior is not intersected by many electrical wires. However, when the BSI box fails, your vehicle will face many problems.
🚗 BSI car box: what is it?
The BSI box is Intelligent Easement Crate, not to be confused with BSM (Engine relay box). In English we are talking about Built-in system interface... However, not all manufacturers use this term. So, if we are talking about a BSI box on a Peugeot or Citroën, Renault prefers to call it UCH (Interior control unit) and Audi calls it the Comfort Module.
However, it is the same electronic organ... The role of the BSI is to centralize information vehicle electronics transmitted by various sensors. It centralizes the collected data and transfers the information. For example, when you activate a turn signal, BSI accepts the command and lets you execute it so that the turn signal starts working.
BSI box a little the brain of your car ! This reduces the number of electronic connections and allows the various computers in the vehicle to be connected to each other. The BSI block forms the basis of a system consisting of:
- D 'Power supplies ;
- De Sensors which convert data (speed, temperature, etc.) into electrical signals;
- De calculators ;
- of drivesthat carry out the action without the mediation of the driver.
The BSI box was invented in 1984. Philip Balli... It was developed in the 1990s and has finally been generalized under different names on vehicles since 2000. Today it controls many functions: windows (except crank), alarms (turn signals), etc.), door locks, etc., etc.
In short, the BSI box is large communication interface in your car. Everything is based on a computer language called multiplexingpresented by Philip Bally on what was called before 1984 Interactive safe.
⚠️ How do I know if BSI HS is compliant?
The features of the BSI HS housing are above all electronic... If your BSI is defective, you will notice:
- of startup problems ;
- Deterioration of the work of elements such as windows, wipers, dashboard lights, etc .;
- Deteriorating vehicle performance By itself: engine speed and speed change.
Calculators are rarely responsible for this problem. Typically the BSI connectors are the cause of the failure.
However, a faulty BSI gives signals similar to battery problem or Fuse... Therefore, it is absolutely necessarycarry out real electronic diagnostics with a technician to verify that the BSI is indeed the cause of the problem.
👨🔧 How to check the BSI box?
Diagnosis of the BSI block is a complex operation, accessible only to qualified specialists. In particular, all electronic inputs and outputs must be tested. BSI case testing is done with special softwarecalled DiagDox in Peugeot and Citroën. Therefore, it is necessary to consult a professional to diagnose your BSI.
🔋 How to reprogram a BSI box?
When changing technicians, it also resets the BSI. Reprogramming your engine BSI can be done individually, but is vehicle specific. On Peugeot vehicles, the BSI can be reset as follows:
- All switch off in your car, open the door driver (unlocking will be temporarily unavailable during manipulations);
- Wait a few minutes until the BSI relay clicks;
- Disconnect the batterywait at least 5 minutes and reconnect it;
- Reconnect the batterywait at least 2 minutes then turn on the ignition and make sure everything is working properly.
However, it is best to entrust any reprogramming or updating of your BSI to a professional garage owner equipped with the appropriate software.
🔧 How to repair a BSI box?
If you suspect the problem is with your BSI unit, take complete electronic diagnostics... In case of failure of the BSI unit, repair is usually impossible... Your mechanic will take care of replacing the box because this is a complex electronic system that can malfunction for several reasons. Avoid contacting so-called BSI body repairers.
💸 What is the price of a BSI box?
The BSI body is an important and complex part. Therefore, it is also an expensive part! To replace your BSI unit you need to count from 400 to more than 1000 €, not counting the labor costs to reinstall and reprogram it.
You can only get the BSI from your vehicle manufacturer's network. It is impossible to install a used BSI box on your car.
Now you know how your car's BSI box works! You get the idea: it is the fundamental organ of the electronic functioning of your vehicle. If you are concerned about a breakdown of your BSI, quickly diagnose it with a trusted mechanic.
