W223 S580 intermittent loss of gear indicator + system shutdown / stall
Thread Starter
Newbie
Joined: Jan 2026
Posts: 6
Likes: 0
W223 S580 intermittent loss of gear indicator + system shutdown / stall
Hi all,
Looking to see if anyone has experienced this on a W223.
Vehicle: W223 S580 LWB 2025
Intermittent issue while driving:
• Engine management light comes on (often first symptom)
• Shortly after, multiple systems cancel (AC stops cooling, driver assist limited)
• Gear indicator disappears completely from the instrument cluster (no P/R/N/D)
• Warnings appear that the vehicle may roll / cannot confirm Park
• In some cases the engine stalls while driving
• Restart may be blocked until Park state is revalidated
• Once gear indication returns, systems recover and the engine light often clears by itself
Key observation: Every event coincides with the cluster losing gear indication. When P/R/N/D returns, the car recovers immediately.
There is also an occasional harsh 2→3 upshift, but this occurs independently and does not reliably precede the failure.
Feels electrical / control related rather than mechanical. Possibly TCU communication, Park plausibility, 12V/48V power, DC-DC converter, or software.
Has anyone seen similar behaviour, or knows of TSBs or software updates that address this on W223 580 L 2025
Looking to see if anyone has experienced this on a W223.
Vehicle: W223 S580 LWB 2025
Intermittent issue while driving:
• Engine management light comes on (often first symptom)
• Shortly after, multiple systems cancel (AC stops cooling, driver assist limited)
• Gear indicator disappears completely from the instrument cluster (no P/R/N/D)
• Warnings appear that the vehicle may roll / cannot confirm Park
• In some cases the engine stalls while driving
• Restart may be blocked until Park state is revalidated
• Once gear indication returns, systems recover and the engine light often clears by itself
Key observation: Every event coincides with the cluster losing gear indication. When P/R/N/D returns, the car recovers immediately.
There is also an occasional harsh 2→3 upshift, but this occurs independently and does not reliably precede the failure.
Feels electrical / control related rather than mechanical. Possibly TCU communication, Park plausibility, 12V/48V power, DC-DC converter, or software.
Has anyone seen similar behaviour, or knows of TSBs or software updates that address this on W223 580 L 2025
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Joined: Sep 2019
Posts: 3,109
Likes: 1,490
From: U.S.
Current/Last 5-years:GLS;G70;Alpina B8;X7;Accord. Sold:X7,TeslaS;S560;S550,X5;530e;L.Navigator;LS460
Wow... Aren't you the 3rd one here posting about the same gear issue even with a newer W223? There was another thread about the same that I remember, try to search for it and see...
Super Member
Joined: Jan 2008
Posts: 650
Likes: 24
From: Texas
2015 White/brown Nappa S550, '13 S550 4 matic, 11 S550 sold, '10 S550 Sports BLACK 08 S550 P3 sport
Hi all,
Looking to see if anyone has experienced this on a W223.
Vehicle: W223 S580 LWB 2025
Intermittent issue while driving:
• Engine management light comes on (often first symptom)
• Shortly after, multiple systems cancel (AC stops cooling, driver assist limited)
• Gear indicator disappears completely from the instrument cluster (no P/R/N/D)
• Warnings appear that the vehicle may roll / cannot confirm Park
• In some cases the engine stalls while driving
• Restart may be blocked until Park state is revalidated
• Once gear indication returns, systems recover and the engine light often clears by itself
Key observation: Every event coincides with the cluster losing gear indication. When P/R/N/D returns, the car recovers immediately.
There is also an occasional harsh 2→3 upshift, but this occurs independently and does not reliably precede the failure.
Feels electrical / control related rather than mechanical. Possibly TCU communication, Park plausibility, 12V/48V power, DC-DC converter, or software.
Has anyone seen similar behaviour, or knows of TSBs or software updates that address this on W223 580 L 2025
Looking to see if anyone has experienced this on a W223.
Vehicle: W223 S580 LWB 2025
Intermittent issue while driving:
• Engine management light comes on (often first symptom)
• Shortly after, multiple systems cancel (AC stops cooling, driver assist limited)
• Gear indicator disappears completely from the instrument cluster (no P/R/N/D)
• Warnings appear that the vehicle may roll / cannot confirm Park
• In some cases the engine stalls while driving
• Restart may be blocked until Park state is revalidated
• Once gear indication returns, systems recover and the engine light often clears by itself
Key observation: Every event coincides with the cluster losing gear indication. When P/R/N/D returns, the car recovers immediately.
There is also an occasional harsh 2→3 upshift, but this occurs independently and does not reliably precede the failure.
Feels electrical / control related rather than mechanical. Possibly TCU communication, Park plausibility, 12V/48V power, DC-DC converter, or software.
Has anyone seen similar behaviour, or knows of TSBs or software updates that address this on W223 580 L 2025
Thread Starter
Newbie
Joined: Jan 2026
Posts: 6
Likes: 0
Dealer tries very hard dealer does all of the upgrades
Dealer leaves are plugged in to their system dealer does all test
dealer does everything you can but can’t replicated it
it continues to happen when I drive it but not all the time but once or twice a week
dealer communicate with the factory always and has always been very supportive best I could hope for
Dealer leaves are plugged in to their system dealer does all test
dealer does everything you can but can’t replicated it
it continues to happen when I drive it but not all the time but once or twice a week
dealer communicate with the factory always and has always been very supportive best I could hope for
Last edited by CaptainStarwars; Jan 28, 2026 at 09:33 PM.
Super Member
Joined: Jan 2008
Posts: 650
Likes: 24
From: Texas
2015 White/brown Nappa S550, '13 S550 4 matic, 11 S550 sold, '10 S550 Sports BLACK 08 S550 P3 sport
Dealer tries very hard dealer does all of the upgrades
Dealer leaves are plugged in to their system dealer does all test
dealer does everything you can but can’t replicated it
it continues to happen when I drive it but not all the time but once or twice a week
dealer communicate with the factory always and has always been very supportive best I could hope for
Dealer leaves are plugged in to their system dealer does all test
dealer does everything you can but can’t replicated it
it continues to happen when I drive it but not all the time but once or twice a week
dealer communicate with the factory always and has always been very supportive best I could hope for
Thread Starter
Newbie
Joined: Jan 2026
Posts: 6
Likes: 0
No Leman laws in Australia plus I love the car. I don’t wanna hand it back. I just want to sign out the bugs. I’ve had 20 S classes long wheelbase I’m only looking on the forum to get some additional information from others not a refund.
Member
Joined: Nov 2017
Posts: 203
Likes: 78
From: York, Pa.
2021 S580 4MATIC with Rear Executive Seating Pkg. 4D Entertartainment Rear Screens Pkg.
Hi all,
Looking to see if anyone has experienced this on a W223.
Vehicle: W223 S580 LWB 2025
Intermittent issue while driving:
• Engine management light comes on (often first symptom)
• Shortly after, multiple systems cancel (AC stops cooling, driver assist limited)
• Gear indicator disappears completely from the instrument cluster (no P/R/N/D)
• Warnings appear that the vehicle may roll / cannot confirm Park
• In some cases the engine stalls while driving
• Restart may be blocked until Park state is revalidated
• Once gear indication returns, systems recover and the engine light often clears by itself
Key observation: Every event coincides with the cluster losing gear indication. When P/R/N/D returns, the car recovers immediately.
There is also an occasional harsh 2→3 upshift, but this occurs independently and does not reliably precede the failure.
Feels electrical / control related rather than mechanical. Possibly TCU communication, Park plausibility, 12V/48V power, DC-DC converter, or software.
Has anyone seen similar behaviour, or knows of TSBs or software updates that address this on W223 580 L 2025
Looking to see if anyone has experienced this on a W223.
Vehicle: W223 S580 LWB 2025
Intermittent issue while driving:
• Engine management light comes on (often first symptom)
• Shortly after, multiple systems cancel (AC stops cooling, driver assist limited)
• Gear indicator disappears completely from the instrument cluster (no P/R/N/D)
• Warnings appear that the vehicle may roll / cannot confirm Park
• In some cases the engine stalls while driving
• Restart may be blocked until Park state is revalidated
• Once gear indication returns, systems recover and the engine light often clears by itself
Key observation: Every event coincides with the cluster losing gear indication. When P/R/N/D returns, the car recovers immediately.
There is also an occasional harsh 2→3 upshift, but this occurs independently and does not reliably precede the failure.
Feels electrical / control related rather than mechanical. Possibly TCU communication, Park plausibility, 12V/48V power, DC-DC converter, or software.
Has anyone seen similar behaviour, or knows of TSBs or software updates that address this on W223 580 L 2025
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Thread Starter
Newbie
Joined: Jan 2026
Posts: 6
Likes: 0
New malfunction message
[img alt="This morning shut down event another new screen “ malfunction “ no 48 volts screen
"]https://cimg2.ibsrv.net/gimg/www.mbworld.org-vbulletin/2000x1504/img_7565_66f0b417916cf7e9a08e608bd18f6413d36b1c3b. jpeg[/img]
This morning shut down event another new screen “ malfunction “ no 48 volts screen
"]https://cimg2.ibsrv.net/gimg/www.mbworld.org-vbulletin/2000x1504/img_7565_66f0b417916cf7e9a08e608bd18f6413d36b1c3b. jpeg[/img]
This morning shut down event another new screen “ malfunction “ no 48 volts screen
Last edited by CaptainStarwars; Jan 29, 2026 at 04:42 PM.
Thread Starter
Newbie
Joined: Jan 2026
Posts: 6
Likes: 0
• Fault is intermittent overall, but reliably triggered when both rear wheels drop into a road rut; it can also occur randomly at other times.
• When it occurs, the car shows 48 V warnings, loses Park indication, and disables cruise control and driver assistance (limp / no-accessory mode).
• The condition is temporary and resettable with a full stop + door open + lock/unlock + restart, after which all systems return.
• Pattern strongly suggests a loose or marginal electrical connection / earth / loom, likely involving the 48 V system, rather than a pure software issue.
• When it occurs, the car shows 48 V warnings, loses Park indication, and disables cruise control and driver assistance (limp / no-accessory mode).
• The condition is temporary and resettable with a full stop + door open + lock/unlock + restart, after which all systems return.
• Pattern strongly suggests a loose or marginal electrical connection / earth / loom, likely involving the 48 V system, rather than a pure software issue.
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