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VanMoof error 18: Battery does not switch on

VanMoof S3 / X3 (also S5 / A5 where applicable)Dealer neededDo not keep riding

The controller asked the battery to power up and it did not respond. The pack may be deeply discharged, the BMS may be latched off, or the wake-up signal is not reaching the battery. The bike stays dark or shows the error briefly and shuts down.

Likely causes

Battery discharged below the BMS wake-up threshold after months of storage
BMS in protective lock after a fault (see errors 0-15)
Broken wake-up or enable line in the harness
Faulty charger port so the pack never received charge
Cell group failure so the pack cannot supply voltage on demand

How to fix VanMoof error 18

Connect the original charger and leave it for several hours; check whether the charger LED changes colour at any point
Try a different wall socket and inspect the charge port on the frame for dirt or bent pins
Hold the power button 10 to 15 seconds for a hard reset, then try again
Leave the bike indoors overnight if it was very cold
If it still stays dead, an independent VanMoof-capable shop can wake the BMS on the bench or test the wake line in the harness

Go to a dealer if: Go to a shop if the bike is still dead after a full night on the original charger.
Warranty: Batteries on pre-bankruptcy bikes are out of warranty in practice; only bikes bought from the relaunched VanMoof carry a current warranty, so budget for a paid repair.
Typical cost: A bench wake-up or BMS reset is about EUR 50-120; if cells are gone, a refurbished or new battery is EUR 350-900.

Still stuck? Take a photo of the display and show it to a local e-bike workshop. Bring the bike's system name (e.g. Bosch Performance Line CX) and the exact code; that saves diagnostic time and money.

Frequently asked

My VanMoof is completely dead, is that error 18?

Often yes, although a totally dead bike may not even manage to show the code. The recovery path is the same: charge, reset, then shop.

How long can a VanMoof S3 battery sit empty?

Ideally never below 20 percent for more than a few weeks. Several months at zero can push the pack below the point where the BMS will wake up.

Is the charger the problem?

It can be. If you have access to another VanMoof charger of the same type, try it before assuming the battery is dead.

Related VanMoof codes

0-15 · Battery protection active (BMS cut-off)16 · Battery defect or connection problem 21 · Charger cable not recognised

Not an official VanMoof document. Compiled from workshop experience and public service information; details can differ per system version and bike brand.