BMW F30 F20 Rear Window Regulator Switch Defective? 9208107
The window regulator switch in the rear door is one of the components that is operated often in everyday use – by children, passengers and when airing out the car. After a few years it responds only sporadically, the window stops halfway or no longer moves at all. Many owners first suspect a faulty motor. This guide shows how you can narrow down the switch as the cause with little effort and which replacement part fits.
Symptoms
| Symptom | Likely cause |
|---|---|
| Rear right window does not respond at the door switch, but does via the driver's switch | Window regulator switch in the rear door defective |
| Switch only works with repeated or firm pressing | Worn or dirty contacts in the switch |
| Window moves in one direction only | One contact track of the switch not working |
| Switch rocker wobbles, sticks or is broken | Mechanical damage to the switch |
| Window responds to neither the door switch nor the driver's switch | Different cause: window motor, regulator, broken wire in the door wiring boot, or control unit. The principle of narrowing it down is shown in our guide on the Door control unit (example Mercedes CLK W209) |
Causes
Inside the switch, small contact surfaces operate and switch with every actuation. Over time these surfaces wear down, oxidize or get dirty from dust and moisture that enters via the door panel. Spilled drinks and cleaning agents accelerate the process. Mechanical wear on the rocker and the detents adds to it. Since the rear switches are used less often than the driver's switch, a defect often goes unnoticed for a long time – for example, when passengers can no longer open the window.
Testing it yourself
- Check the window lock button: Check on the driver's switch whether the lock for the rear window regulators is active. This is the cheapest case – and costs nothing.
- Cross-check from the driver's seat: If the window can be moved from the driver's switch, the motor and regulator are working. The fault is then very likely in the door switch.
- Visual inspection: Carefully pry the switch out of the trim and check for dirt, moisture or corroded plug contacts.
- Check the connector: Unplug the connector, clean the contacts and plug it back in firmly. If that does not help, the defect is in the switch itself.
- Swap test: If you have a matching switch at hand, try it in as a test. If the window works with it, the cause is clear.
Solution
A worn window regulator switch is replaced – repairing the contacts is hardly worthwhile for this component. We carry the genuine BMW switch 61 31 9 208 107 (9208107) in new, never-installed condition from old stock. The price ranges, depending on the listing, from 24,00 € to 24,99 €; several pieces are in stock. Compare the number on your removed switch before ordering.
BMW Window Regulator Switch 9208107, Genuine OEM New
Part number 61 31 9 208 107
24,99 €
View productYou will find more parts for BMW and other makes in our category Other makes. If the electric seat adjustment is failing instead of the windows, see our guide BMW Seat Adjustment Switch 9299229/9299230.
Compatible vehicles
| Model | Model series |
|---|---|
| BMW 1 Series | F20, F21 |
| BMW 2 Series | F22, F23, F45 |
| BMW 3 Series | F30, F31, F34 |
| BMW 4 Series | F32, F33, F36 |
| BMW M4 | F82 |
The information comes from our product data. Model year limits and equipment variants are not broken down there – what counts is comparing the part number with your old part.
FAQ
What is the part number of the rear right window regulator switch on the BMW F30?
The switch bears the BMW number 61 31 9 208 107, 9208107 for short. This number is usually on the underside of the switch and should be compared before ordering.
Does the switch 9208107 also fit the 1 Series F20 and the 4 Series F36?
According to our product data, the switch is intended for 1 Series F20/F21, 2 Series F22/F23/F45, 3 Series F30/F31/F34, 4 Series F32/F33/F36 and M4 F82. What remains decisive is comparing it with the number on your old part.
Why does the rear window only work from the driver's seat?
Then the switch in the rear door is often defective, because the motor and wiring are evidently working. Check beforehand whether the lock button for the rear window regulators on the driver's switch is active.
Is the switch new or used?
These are genuine BMW switches in new, never-installed condition from old stock.
How much does the window regulator switch 9208107 cost?
Depending on the listing, the switch costs 24,00 € to 24,99 € with us. Several pieces are in stock.
KFZTeile-Thot is a specialist for tested and refurbished Mercedes parts with its own test benches – and also carries selected tested parts from other makes, such as this genuine BMW switch. Over 1,000 positive eBay reviews show that our customers rely on us. Not sure whether the switch fits? Call us at +49 179 8991069 (Mon–Fri 8 am–6 pm) or write to us via the contact form.