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RNS-E potentially draining battery?

Discussion in 'A6/S6/Allroad forum (C5 Chassis)' started by rhys084, Mar 4, 2014.

  1. rhys084
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    rhys084 Member

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    [Mar 4, 2014]
    When i bought my allroad the Nav DVD was missing. So the dealer gave me a disc from a 2007 A4 RNS-E. I have noticed that the compass/road name is not displayed in the DIS like on other C5 and also the unit hisses a lot when i get in the car and turn off the ignition.

    Is it possible that the 2007 A4 disc has altered some sort of coding and the unit isn't shutting down and not coded properly for the car and this is what's draining the battery?
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  3. B5NUT
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    B5NUT Well-Known Member VCDS Map User

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    [Mar 4, 2014]
    It does sound like the can-bus wires are not connected or some how been disconnected. Do you know if the RNS-E was retrofitted or factory fit?
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  4. rhys084
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    rhys084 Member

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    [Mar 4, 2014]
    Factory fitted.
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  5. B5NUT
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    B5NUT Well-Known Member VCDS Map User

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    [Mar 5, 2014]
    you need vcds to confirm, but if you are not getting information on the DIS and the radio is not switching off with the ignition then there is a can-bus problem.
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  6. rhys084
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    rhys084 Member

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    [Mar 5, 2014]
    Just for clarification it does show the navigation parts but only when in route guidance mode, other C5's i've seen show the road name and compass as an option on the DIS even when not using the route guidance at that time.
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  7. BlackQuat
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    BlackQuat Well-Known Member VCDS Map User

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    [Mar 6, 2014]
    That's an option within the RNSE. You can enable it.
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  8. rhys084
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    rhys084 Member

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    [Mar 6, 2014]
    Ah okay! Not that it will help the drain, but how do you enable it? Is it in the engineering menu?
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  9. BlackQuat
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    BlackQuat Well-Known Member VCDS Map User

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    [Mar 10, 2014]
    Just in the settings on the RNSE it's self.
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  10. andyt1967
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    andyt1967 Member

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    [Mar 11, 2014]
    The cooling fans on my sat nav plus run for a time after shut down, you don't hear them when the engine is running but do once you turn off the engine. They only run for a short time, a minute or so max I would guess.
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