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I have this problem with the Nav unit, I would search for a particular POI such as a grocery store, the Nav unit would display a list of the stores but no address would appear. The Nav unit would show how many miles away the store is when I select it but since no address would come up, I cannot select "Plan route". The Nav CD is in the unit and they are the latest maps. Does anyone know how to solve this problem?

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I'm not sure, it's a recent installation by the dealer. What firmware version should it be?

According to the PCM it's 2.0, software 2.0. Interestingly, the discs state that they are compatible to software version 3.0.

That may be the problem, I'll take it in to upgrade the software. Thanks Loren.

Edited by basaltnpepper
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It will depend on the exact PCM unit in your car (by PCM part number). But I believe all are supposed to be at "Model Level B".

Ask your dealer to check:

TSB 27/04 W522 W522 – Updating The PCM2 Operating System and Replacing The 3 - CD ROM Street Map Navigation CDs (Workshop Service Action)

and TSB 8/05 9112 PCM2.1 and Navigation Unit: System Connection Software Release, "Model Level B"

and TSB 9/05 9110 PCM2.1 Navigation Update.

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It will depend on the exact PCM unit in your car (by PCM part number). But I believe all are supposed to be at "Model Level B".

Ask your dealer to check:

TSB 27/04 W522 W522 – Updating The PCM2 Operating System and Replacing The 3 - CD ROM Street Map Navigation CDs (Workshop Service Action)

and TSB 8/05 9112 PCM2.1 and Navigation Unit: System Connection Software Release, "Model Level B"

and TSB 9/05 9110 PCM2.1 Navigation Update.

My Nav unit shows 2.0 software. The discs show that I need version 3.0, now I'm really confused. Either way I'll be taking it in for a software update. Thanks.

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