Could be the ABS sensors have filled up with grime and dirt, leading to the ABS system not sensing the turning of the wheels. Try hosing the inside of the wheels and the hubs and see if it doesn't fix itself.
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'91 164 TS (Ford) // '99 166 3.0 (La Divina) // '72 Montreal (La Tempesta)
Ex '04 147 2.0TS Arrabiata Veloce (Zaphod)