Map database missing
After pressing NAV, you will see the message “Navigation Database Not Detected Please Install Navigation Database”. This means the radio cannot detect the map database. We check the module and determine the cause.
No navigation when you press NAV or a message about the missing map database? We repair RHW Harman Becker units from Chrysler, Dodge and Jeep. Send the module only with a description of the symptoms, we will check it at the workshop and confirm the scope of the repair.

Written repair warranty
Quote for approval before repair
Courier shipping from anywhere in Poland
Quick repair quote
RHW is a factory navigation radio by Harman Becker fitted in Chrysler, Dodge and Jeep vehicles. It appears, among others, in the Chrysler Town & Country and Chrysler 200, as well as in various Dodge and Jeep models. The units date from approx. 2008–2018.
You can recognise it by the RHW marking on the front panel — the symbol is in the lower right corner of the casing, next to the AUX input. Check the front panel to confirm the model before sending it in.
In your enquiry, describe what happens when you press the NAV button and when the problem occurs. Send the removed module only by courier; before submitting the job, you can send us a photo of the label with the part number and we will verify it.
The symptoms help describe the fault. We confirm the cause after checking the removed module.
After pressing NAV, you will see the message “Navigation Database Not Detected Please Install Navigation Database”. This means the radio cannot detect the map database. We check the module and determine the cause.
The map drive may be damaged or may not boot in the radio. You can remove the drive and test it outside the radio — if it works outside the module, the problem may be in the unit’s electronics. In our workshop we check the drive, software and module electronics.
A faulty drive power supply circuit or another main board electronics failure can cause the radio not to see the drive and the navigation not to work. This is a fault that requires main board repair. We check the module and repair the electronics.
We check whether the radio detects the drive and which messages appear. After diagnosis, we confirm the scope of work and the repair price.
We check the map drive and the software. We replace a faulty drive, and update or reload the software. After the repair, we test the navigation system.
We remove faults in the drive power supply circuit and other main board damage requiring electronic repair. After the repair, we check whether the module recognises the drive and whether the navigation works.
A used unit from the market may have the same problem with the drive or board. We repair your unit, and after the repair we test the device and send it back safely packaged.
You do not need to bring the vehicle in. Describe the problem and we will help you work out what to remove and send. After inspection, you will receive a quote for approval — only then will we start work.
01
Write what is happening in the vehicle, state the make, model and year. Add a photo of the device, the error screen or the nameplate sticker, if you have one. On that basis, we will initially assess whether we can help.
02
Not sure whether to remove the radio, screen, amplifier or another unit? We will advise which component to check, how to prepare it for shipping and how to pack the parcel safely.
03
In the workshop we carry out diagnostics, confirm the source of the problem and define the scope of work. We send a quote for approval. We only start work after your approval.
04
We remove the cause of the fault, test the device and send it back safely packed for refitting. Every repair we carry out is covered by a warranty.
Answers to questions about RHW Harman Becker repair.
This may mean a faulty drive, a software error or damage to the main board electronics. After checking the module, we identify the cause and suggest a repair.
If the drive is faulty, replacing it may restore navigation. If the problem lies in the board electronics, the drive alone may work outside the module — we check this in the workshop and confirm the scope of board repair.
If you decide not to proceed, the unit cannot be repaired or the fault lies outside it, diagnosis and return are free of charge. We only start the repair after you accept the scope and price.
Read how we solve the problem of missing navigation function in RHW.