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VanMoof error 46: Motor over-current or over-temperature

VanMoof S3 / X3 (also S5 / A5 where applicable)Fix at homeRide with caution

The motor controller cut power because the motor was drawing too much current or got too hot. This is protective, not a defect, and appears after long Boost use, steep climbs, heavy loads or riding into a headwind in summer. The bike usually restarts once the motor cools.

Likely causes

Long or repeated Boost on hills with a heavy rider or cargo
Hot weather with the front hub in direct sun
Brake dragging on the front wheel making the motor work harder
Under-inflated tyres increasing rolling resistance
Worn motor bearings or a partially failed winding (rare, but shows as frequent 46 on flat roads)

How to fix VanMoof error 46

Stop, switch the bike off and let the front hub cool for 10 to 15 minutes; do not pour water on it
Check the front brake is not rubbing and the tyres are at the recommended pressure
Use Boost in short bursts rather than holding it on climbs
Lower the power level in the app for long climbs or heavy loads
If error 46 appears on flat roads, at low power or when the hub is barely warm, have an independent VanMoof-capable shop check the motor and controller

Go to a dealer if: Go to a shop if the code appears without hard use or when the motor is cool, because that points at a motor or controller fault rather than heat.
Warranty: Warranty from the original VanMoof B.V. died with the 2023 bankruptcy; the relaunched VanMoof (LAVOIE/McLaren Applied) only covers bikes sold by them after the relaunch, so most S3/X3 owners pay for repairs.
Typical cost: Nothing for a genuine thermal cut-out; a motor or controller check is about EUR 50-100, motor replacement EUR 300-600 if it is actually failing.

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

How hot does a VanMoof motor get?

Hot enough to trip protection on long climbs in summer. That is designed behaviour. Regular cut-outs in normal riding are not.

Is Boost bad for the motor?

No, but continuous Boost on a heavy bike up a long hill will hit the limit. Short bursts are what it was designed for.

Can a dragging brake cause error 46?

Yes. A rubbing front disc makes the motor work constantly. Spin the front wheel by hand and listen.

Related VanMoof codes

41 · Boost button pressed too long or too often 47 · Motor driver fault 49 · Motor fault (controller error)

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