2003 S80 will not start

worldgoround · Post by **worldgoround** » 08 Feb 2010, 16:32

This morning my wife was going to take my S80 to drive our child to school. She came back in and said the car would not start and the message said it was the Immobilizer. I came to this forum and found the solution for that, but not the car will not start. The car will crank, the lights on the dash come on, but it simply will not start. The message says something to the effect of "Reduced Engine Performance." It looks as though the battery may be going down some. The car is sitting on flat asphalt, and although it is time to fuel up, it isn't out of gas. Any ideas as to why it won't start? It did this once before. It was a rainy morning and it would not start, but after letting it set for half an hour, it started and hasn't been any trouble since, until now. I appreciate your help.

jbrown122 · Post by **jbrown122** » 09 Feb 2010, 19:26

I read here something about having two ignition keys on the same ring (or in the glovebox) can cause the immobilizer to act up. Just a thought?

worldgoround · Post by **worldgoround** » 02 Mar 2010, 18:21

Don't get me started on this whole immobilizer thing. I still get angry when I think about it.

Turns out, it was the fuel pump.

RobertsonH · Post by **RobertsonH** » 07 May 2015, 22:25

We replaced the fuel pump on our 2003 T6 s80. Still doesn't start. It will turn over, but will not start. Is there a fuel relay in the trunk?

Post by **doublebug** » 08 May 2015, 05:04

Fuel relay is in CEM.