Suzuki GrandVitara All Power Windows Dead, Fix Guide

As someone with moderate experience working on Suzuki models, I encountered a similar issue with my 2020 Suzuki Vitara Hybrid. The symptoms were identical, complete power window failure across all windows. Initially, I also thought the window regulator was the culprit, but after taking it to my workshop, they diagnosed a faulty main power window switch in the driver door panel. The window track and window regulator components were actually fine. The repair involved: 1. Removing the driver door panel 2. Testing the window regulator motor connections 3. Replacing the main power window switch unit 4. System reset and testing Total repair cost was 200€, including parts and labor. The fix resolved all window operation issues completely. Before jumping to conclusions about your GrandVitara, could you share: Does the problem affect all windows simultaneously? Are you hearing any clicking sounds when pressing the switches? Did the issue occur suddenly or gradually? What error code is displayed? This information would help determine if your issue matches what I experienced with the switch unit or if its potentially related to other car window components.

Last service was at 50000 KM and yes, all windows stopped working simultaneously without any clicking sounds. The error code displayed is E-45. The issue occurred right after a heavy rainfall, which makes me wonder if water infiltration might be involved. I have not noticed any grinding or unusual sounds from the window track mechanisms before this happened. The automotive repair costs in my case could be significant if all window regulators need replacement, so I want to explore all diagnostic options before proceeding with repairs. I was also wondering if the hybrid system could somehow be related to this electrical issue.

Thanks for providing those additional details about your GrandVitara. The heavy rainfall timing is particularly relevant, as my case also involved water-related issues, though I discovered this later in the repair process. When my window control system failed after rain, the mechanics found water had seeped into the master window control unit through a deteriorated door seal. The error code E-45 typically points to a communication fault in the power window circuit, which matches the symptoms you described. The repair in my case involved: Drying and cleaning the window control module, Replacing the compromised door seal, Installing a new master window switch unit, Testing all window regulators and motors The window mechanism components themselves were unaffected. Each window motor tested fine once the control unit was replaced. Total cost came to 280€, significantly less than replacing multiple window regulators. Given the identical symptoms and circumstances, I suggest: 1. Check your door seals for any visible damage 2. Have the control module tested for water damage 3. Verify the window motor connections are dry and corrosion-free The hybrid system was not related to the window failures in my case. These window control issues are typically isolated from the main power train systems.

Since all previous details match my situation exactly, I will try checking the door seals first. Your insight about water damage makes perfect sense given the timing after rainfall. I definitely prefer potentially fixing a seal and control unit rather than replacing all window regulators. Quick follow-up on my original post: The mechanics just tested the window regulator motor on each door and confirmed they are responding normally when directly powered. This seems to further support your theory about the control module being the likely culprit rather than the window track mechanisms themselves. I will schedule a repair visit focused on inspecting the seals and testing the master control unit. At 280€, this repair approach would be much more manageable than my initial concerns about multiple window regulator replacements. Thanks for helping me narrow down the most likely cause. Will update once the repair is complete.