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The JX1 module is responsible for charging the 12V battery. Make sure this is what they are talking about changing. If yes, the price sounds about right for a dealer price. You can of course take it to an independent VW shop to get the work done too with a module from a used car.

It could be software, could be hardware, could be wiring... To answer your question, yes the front driver door module controls the locks on the front driver door. You need to provide more information on what's going on. Software doesn't change on its own, so what happened before both your rear...

The front driver module controls the rear driver door and the front passenger module controls the rear door.

MK7 and other VWs are known to have leaking coolant on the connector on the coolant bottle. Unplug the connector and inspect for corrosion and damage. Check on the bottle side and the connector side.

1) Depends on which region you are in. Most of the world you can get it legally and for free from Volkswagen: https://app-connect.volkswagen.com/mapupdates/en/car/ Canada and USA you can only legally get it from Volkswagen for a price. You can call up your local parts department and ask for how...

Firstly, when you replaced the battery did you replace it with an exact match? (AGM to AGM and XX Ah to XX Ah) If no, then this would cause an issue with the charging logic over time. Secondly, if the car doesn't know a new battery is installed, the battery charging logic will be altered and...

I'm confused. If you have 'Otis' which I assume you meant ODIS, then you already have the guided functions you needed to replace the module. Your original post said you replaced the module and you weren't able to charge. You say "Do I still have to teach the charger again or load different...

Be aware that even if you find another used module with the same revision, you will still need to perform coding on it. If your current module works then you can at least try to backup your current long coding and adaptations. Then you can see if you can use those on a new module. However when I...

If your negative battery terminal has this connector on it, then you need to still have your battery programmed in the gateway module: Sure you might not have any error messages on the dash, but if the car's computer doesn't know you installed a new battery then it won't be charging it...

The new module is not plug and play, it requires coding. Also, the fact you are installing an older revision is probably asking for trouble. The software version on the unit might be too old and might be incompatible with other units in the car. Best case scenario is that the module software...

The pump is a motor that is driven directly, not over CAN. The "Vehicle Electrical System Control Module" is the one that controls the pump.

Are you talking about a software update to the radio or for the maps? There does exist newer map versions than that.

Does your car have the heat pump? If yes, then when you evacuate and refill the system it needs to be done with a scan tool so that it opens all the valves up in the system. This is detailed in the service manual.