mariekoenig33
Crown rear window heating issue
Summary of the thread
A 2023 Toyota Crown with an electric engine experienced a rear window heating issue, accompanied by a system error and front windshield heating problems. The initial suspicion was a potential problem with the heating coil. However, it was suggested that a weak or defective battery could be the cause, as it might lead to power being shut down to less critical features like window heating. After replacing the nearly dead battery, the heating issue was resolved.
Did this summary help you solve your problem?
4 comment(s)
mariekoenig33 (community.author)
The car starts fine usually, but now that you mention it, it did struggle a bit this morning. You think a battery could actually stop the rear defroster from working?
sebastiankoehler7
Yeah, I've seen that before. If the battery is heavily discharged or defective, the car might shut down power to less important features. Window demister uses a lot of power, so it would make sense. Get the battery checked, but be prepared for a thermal window replacement. A faulty heating issue usually incurs some cost.
mariekoenig33 (community.author)
Okay, thanks! I took it to a workshop, and you were right. The battery was almost dead. Replaced it and that fixed the heating issue. Bill came to 290€. Appreciate the help!
rmh_community_comment_box_header
community_crosslink_scanner_headline
community_crosslink_scanner_intro
community_crosslink_scanner_title
community_crosslink_scanner_price
community_crosslink_rmh_headline
community_crosslink_rmh_intro
community_crosslink_rmh_title
community_crosslink_rmh_subtitle
community_crosslink_rmh_brand
TOYOTA
community_crosslink_rmh_model
CROWN
sebastiankoehler7
Hmm, interesting. That mileage is pretty high for a '23. Are you sure the battery is in good shape? A weak battery can cause all sorts of weird electrical gremlins. Is the car starting normally otherwise?