Service AT in 9 days
Thread Starter
Senior Member
Joined: Aug 2014
Posts: 337
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From: Charlotte, NC
2005 E320 CDI, 2015 GLA 250
Service AT in 9 days
I'm getting a message "Service AT in 9 days". What does this mean?
I am familiar with the A1 and B0 type messages but "Service AT in 9 days" sounds different. If it is AT as in automatic transmission, then I am at just over three years since I did an AT fluid and filter change and 23,000 miles since then. Maybe it needs something at three years and it took me extra days back then to reset the counter.
Ot maybe AT doesn't mean Auto tranny and I'm misreading this thing.
Peter
I am familiar with the A1 and B0 type messages but "Service AT in 9 days" sounds different. If it is AT as in automatic transmission, then I am at just over three years since I did an AT fluid and filter change and 23,000 miles since then. Maybe it needs something at three years and it took me extra days back then to reset the counter.
Ot maybe AT doesn't mean Auto tranny and I'm misreading this thing.
Peter
Out Of Control!!
Joined: Nov 2018
Posts: 11,403
Likes: 5,324
From: San Francisco Bay Area
2019 C63CS
It's due for Service A with additional items. I've never seen T, so not sure what that entails. Usually the service letter is either by itself if it's just a standard service or followed by a number to indicate additional items due at that time such as transmission fluid change, differentials etc. depending on the model. Since you have a diesel, T may indicate a specific additional maintenance item for diesel vehicles.
Thread Starter
Senior Member
Joined: Aug 2014
Posts: 337
Likes: 20
From: Charlotte, NC
2005 E320 CDI, 2015 GLA 250
It’s not for the Diesel, its for the GLA250 with the Four Matic.
It seems a bit early for an oil change and it says AT like it means automatic transmission rather than A service with T subservice. I’ve asked the dealer for advice so maybe we will get a factory answer.
Peter
It seems a bit early for an oil change and it says AT like it means automatic transmission rather than A service with T subservice. I’ve asked the dealer for advice so maybe we will get a factory answer.
Peter
Out Of Control!!
Joined: Nov 2018
Posts: 11,403
Likes: 5,324
From: San Francisco Bay Area
2019 C63CS
The T is definitely some sub type. There are no separate service reminders for the transmission etc. The service intervals for those always line up with an A or B service where applicable. For example with my AMG the transmission interval is every 3 years or 30k miles, whichever comes first, so every third service includes the transmission and it alternates between an A and B service. I had my second transmission service last year together with the B service and the first one was three years earlier together with an A service.
Thread Starter
Senior Member
Joined: Aug 2014
Posts: 337
Likes: 20
From: Charlotte, NC
2005 E320 CDI, 2015 GLA 250
I contacted the dealer and the service manager said he had seen this before and it was just a distortion of the A1 style message. Nothing exotic. Nice to know.
Peter
Peter
