Do it yourself
Frequently asked questions about cars and motorcycles
Car Tutorial (Do it yourself) Motorcycle Tutorial (Do it yourself) Frequently Asked Questions
  1. Car
    2. :
  2. Citroen
    3. :
  3. C4
    4. : What to do when a Citroen BSI control unit fails to provide a signal due to extreme cold.

Citroen C4 - Video tutorial

Model: Citroen C4 MK 1 - Years 2004-2010
Part: Control unit
Operation: What to do when a Citroen BSI control unit fails to provide a signal due to extreme cold.

In this video we see how our YouTuber's Citroen C4 is having trouble starting on a snowy winter day. And we can understand the reason behind it. The dashboard doesn't even light up, and since it is a car with a lot of electronics, we know that everything is controlled by a control unit called BSI in Citroen, which our YouTuber has already disconnected. In fact, when this unit is very cold, it fails to send commands to other components, and usually, it is enough to bring it indoors and warm it up to get it running again. But in this case, the best solution is to replace it, as this trick has been done too many times.


Posted on 21 January 2024 by ScegliAuto

Other guides that may interest you

    Frequently Asked Questions

    • C4 2010-2018 - Reset engine warning light on Citroen C4 Read Answer

How to open the bonnet of the Volkswagen Polo

Let's see in this short and simple guide the instructions that will allow us to open the bonnet of the Volkswagen Polo. First of all we open the front door, on the driver's side, and start pulling the opening lever of the engine hood, in order to open the lock; then let's move to the front of the vehicle and unhook the tab that we find on the central part, above the manufacturer's emblem, as shown in the video. At this point we block the bonnet with the lateral rod; then we accompany the bonnet down to close it again!

Watch the video!


by ScegliAuto

More videos