When the control acts up, it shows it in its own way: via the display, via flashing signals or simply through its behaviour. This overview sorts the message patterns and leads to the matching quick diagnoses. The exact numeric code table of your version is in the Meiller manual.
How to read the messages correctly
Always note three things: what you see, when it occurs and whether it persists after a battery change. With this information the following quick diagnoses lead you to the probable cause in a few minutes, and a phone assessment is much faster too.
Three groups of message patterns
In practice the patterns sort into three areas: first display and warning signals, when the screen stays dark, flashes or shows a battery warning. Second connection and range, when the vehicle no longer responds or only from close up. Third controls and behaviour, when single buttons, the joystick or whole functions drop out. Find the group below that matches your observation and open the matching quick diagnosis.
What you can check yourself – and when to send it in
Fresh batteries, clean contacts and a short restart resolve a large share of the messages. If the pattern persists, the cause lies in the electronics, the radio unit or the receiver in the vehicle. At that point the fastest solution is a tested replacement device via our exchange system: you order for 450 euros net, send in the faulty old device and get the deposit back.
Display and warning signals
Connection and range
Controls and behaviour
Frequently asked questions
Where do I find the official ISAR 3 fault codes?
The authoritative code table is in the Meiller manual of your system, as it differs by version. Our quick diagnoses classify the message patterns practically and do not replace the manual.
My code is not in the manual, what now?
Photograph the display and the type plate and send us both. We classify the message and tell you whether sending the device in makes sense.
Does a restart help with every message?
It is almost always worth a try: remove the batteries for a minute and restart. If the message disappears for good it was a one-off, if it returns there is a real cause behind it.