My wife said our 2014 Passat TDI started to smell of ammonia and asked me to investigate. When I opened the door the smell was horrible. I opened the hood and the were no signs of a DEF leak so I went to the trunk. When I opened the trunk the smell was 10x worse. I checked around the DEF filler and again no signs of leakage. I then lifted the cover over the spare tire and there was liquid (DEF?) under the spare. All the carpet in the trunk area is dry and I can't figure out where it would be coming from. Has anyone seen this or heard of this before?
Thanks
Thanks