Smart #3 HX21 Window Regulator
New, used, or aftermarket – from sellers across Europe.
Parts availability
Limited availability – hank searches the web for you.
Estimated price range
Widely available Limited Hard to find
Last updated: 22.06.2026, 17:18
Window Regulator for your Smart #3?
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Find Smart #3 HX21 parts online
hank's free AI report searches specialized shops for Smart #3 HX21 parts, including partsformercedes-benz.com, Ecooparts & Mecatechnic.
About this part
The window regulator on your #3 HX21 moves the glass up and down. A broken cable, worn motor or failed mechanism leaves the window stuck or dropping – replacement is needed to use the window safely.
Frequently asked questions
What should I check when buying a window regulator for the Smart #3?
Match the exact door position (front/rear, left/right) and the model year of your #3 HX21. Check whether the motor is included or sold separately, as this varies by supplier.
Should I replace the regulator and motor together?
If the motor still works, replacing just the regulator mechanism is fine. If both are old, replacing the complete unit saves time and avoids a repeat failure.
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