What's going on with the 2014 Peugeot 308 dashboard warning light?

I installed a new large-screen navigation system today, and after installation, the center differential lock light is on, the engine warning light is on, and the traction control light is on. What's going on? Help!!?

Hey folks! What's going on with the dashboard lights flickering on and off in the middle section?

What's going on with the 2014 Peugeot 308 dashboard warning light?

Why is the central control screen in my old Peugeot 308 not lighting up?

Is it normal for my 2014 Peugeot 308 to have a fuel consumption of 9 liters per 100 kilometers?

Does anyone know where the air conditioning drain outlet is on the 2014 308?

Where is the AUX audio input on the 2016 Peugeot 308? Can anyone help with this?

Where is the audio input AUX located on the 2016 Peugeot 308?

Are you considering selling an automatic 2016 Peugeot 308?

Can anyone recommend good wipers for a 2016 Peugeot 308? 🙏