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Smooth-sliding windows are a luxury detail Jaguar owners tend to take for granted, but window regulator failure can very much ruin the perfect driving experience—and it is an issue that is often overlooked. Jaguar window regulator failure is far more common than you might think, especially in early 2000s Jaguar S models. S-Types from 2000-2005 tend to fail at some point after 15,000 miles, and other Jaguar models also often present this issue after reaching a certain mileage.
At Autobahn Automotive Service, we specialize in the maintenance and repair of Jaguar and other European vehicles, and we can help you get your windows back to normal in no time. For those in San Antonio, TX, we have been servicing the area for over 40 years and are currently San Antonio’s number-one trusted auto shop.
Let’s talk about the factors leading up to Jaguar window regulator failure and how to avoid them.
Window Regulator 101
As its name implies, the window regulator is the component responsible for raising and lowering your window on command. It is a crucial component of your Jaguar’s power window system.
The window regulator works by converting the rotational motion of an electric motor into linear motion, which is then used to lower or raise the glass. This means that when you activate the window switch, the regulator receives an electrical signal to rotate, and the gear assembly moves the window along the track, guiding the glass along the right path and keeping it in place.
It is a pretty straightforward system, though sometimes if one component fails, it can compromise the others. Let’s get into common causes of window regulator malfunction.
Common Issues with Window Regulators
Because there are so many small components working together—window-related or not—sometimes it can be hard to pinpoint exactly what is causing the malfunction. Sometimes, the problem could be with the window regulator, though other times, the issue could stem from an unrelated component.
When the problem is with the window regulator, five factors tend to be the culprit. Here they are:
- Malfunctioning motor: Since the motor is electric, it can short-circuit or burn out, which stops the window from moving.
- Broken gear assembly: The gears fit perfectly together, but if one of them falls out of place or breaks, the window can get jammed until the gear is fixed.
- Crooked track: The window track can get bent or even snap, which can misalign the window.
- Worn bushings: The regulator is held in place by bushings, so if they get worn or damaged, the entire window could become loose.
- Loose connections: Cables connect the whole system, but they can become loose or corroded. If this happens, the signal to lower or raise the window can’t get through, and the entire system stops.
Though none of this is essential for your car’s functioning, if you notice any signs that your window regulator is failing, it’s best to get it checked right away, as it could cause damage to other parts of the window system and become an even costlier repair.
How Can I Know If the Window Regulator Is Failing?
Truthfully, the only sure way to know there’s an issue with the window regulator is if it stops working altogether or if you notice your window jamming or having trouble going up and down.
When this happens, at Autobahn Auto Service, we can run specialized tests to figure out exactly what the issue is and repair or replace the regulator. The repair or replacement of the window regulator should always be done by a professional because it requires the removal of the door panel and glass.
Window Regulator Repair at Autobahn Auto Service
With over 40 years of servicing San Antonio 
car owners, we pride ourselves on our experience and exceptional customer service. We also offer free Wi-Fi, multi-point inspections with all oil changes, and a local shuttle to keep you on schedule.
Don’t let a faulty window regulator ruin your driving experience. If you suspect something’s wrong with your Jaguar’s windows, don’t hesitate to give us a call. You can reach us at 210-657-1180 or visit our shop—our expert technicians are happy to help.