I have just had my 2013 Volkswagen Touran recall part changed, it was an NOx engine control unit (23R7), and only 5 days later (I don't drive it much) two orange lights came on. Volkswagen say it needs an EGR valve. I said this is a strange coincidence since I had just had the recall done and they say it is not linked and not their fault. My friend said it could be a software fault as it was driving okay. I got it towed to the Volkswagen dealer as I'm 70 years old and worried. Could it just be a software problem as it is a 1.6 diesel and only done 38,000 miles?