Question about Dakota Dodge RB4 Navigation, CD, AM/FM, with CD Changer Controls

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Probleme with rb4 and dvd

Hello i have grand caravan 2004 with original dvd system .i have instal a rb4 navigation but with the rb4 i dont have acces to the dvd menu with me remote and the radio thanks

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  • Anonymous Mar 13, 2014

    how can I reset memory in rb4 radio



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The only reason the DVD will not function with the RB4 is if the DVD unit is not talking on the BUS. The RB4 will work with the factory DVD single disc/or DVD changer.Make sure that the BUS is connected to the DVD unit and the Van thru the 22 pin and 10 pin connectors on the back of the radio.

Posted on Jan 09, 2009


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1 Answer

My navagation system keeps saying that it "cannot read disk" please check disk. Do i need a new disk or is something wrong with my system? 2006 Jeep Grand Cherokee?


the the problem is from the laser (lens) of your navigation system. It cannot read disk because the laser (lens) is weak or dirty.

Its might also be that the disk you inserted into the system has some scratches or the disc is bad. Try several discs on the system.

If problem still persists after trying several discs, get the laser replaced and it should read disk again.

Good luck.

Nov 08, 2010 | Cherokee Jeep Grand RB4 Navigation, AM/FM,...

1 Answer

I have 2005 Jeep Grand Cherokee and have SAME problems - Nav error reading disc. I tried another disc but did not work. No one seems to have an ANSWER on our posts in this forum - I know to clean the disc...

i think the issue with all these problems is that the fan in the back of the navigation system fails and then the disc overheats tremendously (mine overheated to the point that I could not touch it) and then it can not be read.

Mar 13, 2010 | Cherokee Jeep Grand RB4 Navigation, AM/FM,...

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2006 jeep grand cherokee navigation system error can not read disk

how do you eject the nav disc to clean and then resert. 2005 Jeep Grand Cherokee

Aug 14, 2009 | Cherokee Jeep Grand RB4 Navigation, AM/FM,...

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I dont have the cd for navigaton for my s320,2000

To add navigation option you have to have the original screen in the car , and then you have to install the full navigation parts .
You can change the language from the menu itself
Hope that helps

Jun 13, 2009 | 2000 Mercedes-Benz S-Class

1 Answer

05 Dodge Dakota Navigation

Sounds like your describing the overhead console display?
If totally blank, check the 20 amp yellow fuse #14 as a 1st step.

Mar 06, 2009 | Dakota Dodge RB4 Navigation, CD, AM/FM,...

3 Answers


got mine off ebay for a decent price.  you can also order through the dealership.  if you order a newer one (make sure it is for the jeep) it will make some minor changes (upgrades) to your radio.

Jan 10, 2009 | Cherokee Jeep Grand RB4 Navigation, AM/FM,...

1 Answer

RB4 Calibration / Sensors Menu Question

Hi Chris
I have run across the problem with the display showing that you are going backwards on units I work on my bench.As long as you are getting the distance pulses and the nav functions are operating properly the should be no problems.You reinstall the 2060 ver and see if it reverts back to the way it was.Then reinstall the 2070 ver again.The main changes that were madewere to the update speed for the GPS functions.I do have a service manual,but cannot release it to anyone.From what i understand I am the only one that is Factory authorized to repair the RB4 units in the USA.
Feel free to msg me about any other questions you have about the unit
Yes theCAN BUS could cause a problem.
The 07 chrysler's use the highspeed CAN C in some of the app's in the vehicle.But from what I understand they are only using 125hz can BUS speed(which some consider low speed CAN) But as you mentioned the radio is talking on the BUS so it must also have J1850 communication.The RB4 does not have CAN built into the unit.

Jul 07, 2008 | 2007 Jeep Liberty Sport

1 Answer

RB4 problem

You have a problem on the NAV PCB.
Here at Hunt Automotive Electronics we are the only authorized repair center for the Harman RB4 chry Nav radio.I have run across many RB$ units with this problem.

Jun 06, 2008 | Dakota Dodge RB4 Navigation, CD, AM/FM,...

2 Answers

How do you remove DVD stuck in navigation system

If you remove the unit from the dash the top, take off the top cover, no screws you can acess the CD slot. Remove the 4 screws holding the CD player in place and the ribbon cable and you should be able to remove the CD from the slot.

Apr 26, 2007 | Dakota Dodge RB4 Navigation, CD, AM/FM,...

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