rainer_schmitz5
Mercedes CLA Hybrid Automatic Gearbox Problems
Summary of the thread
A 2020 Mercedes CLA Hybrid is experiencing erratic shifting, a transmission warning light, and emergency mode activation. The issue may be linked to low voltage or worn-out transmission oil. Replacing the transmission oil resolved similar problems in another vehicle, suggesting it as a potential solution. A workshop visit confirmed the worn-out oil as the cause, leading to its replacement and resolution of the issue.
Did this summary help you solve your problem?
4 comment(s)
rainer_schmitz5 (community.author)
Did your CLA exhibit the same emergency mode symptoms as well? Did the oil replacement resolve the issue completely, or were further interventions necessary?
claralion1
Yes, it did go into a limp mode a couple of times, which I guess is the emergency mode you mentioned. After the oil replacement, the problems vanished. But honestly, with those symptoms and the mileage, I'd get it checked by a workshop as soon as possible. There could be more going on than just worn-out hydraulic fluid.
rainer_schmitz5 (community.author)
I took your advice and scheduled a workshop appointment. It turns out the automatic transmission oil was worn out and needed replacement. The total repair cost was 240€. Thanks again for your assistance.
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
MERCEDES
community_crosslink_rmh_model
CLA
claralion1
I drive a similar Mercedes CLA, but not a hybrid. I had similar transmission slipping issues a while back. The automatic gearbox acted erratically, especially when the hydraulic fluid got warm. Have you checked the transmission oil level? Low fluid could cause some of these problems.