The most common types of sat nav systems fitted to Peugeot, Citroen, Fiat and Lancia are RT3, RT4 and RT5 made by Magneti Marelli.

Common faults on these systems are frozen screens stuck on Peugeot or Citroen logo, wrong software update, faulty CD drive, no visible satellites, no GSM signal, no radio signal, and many other faults.
If you have a faulty system please contact me for a quote with a description of the fault.
Autotronics offers out of warranty repairs, software updates, latest maps and speed cameras updates at competitive prices.