Service B showing but A is due
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From: Limerick, Pa
GLC300
Service B showing but A is due
I just got a message saying Service B is due, but an A is the one that's due. I'm at 50k so that's an A, correct? How can I get it so it's back in the correct order?
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G550
Thread Starter
Member
Joined: May 2022
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From: Limerick, Pa
GLC300
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A and B services alternate and occur at 12 month or 10K mile intervals, whichever is reached first. While you're at 50K / 60 months, it would seem an A service should be due, but mileage/time accumulation could occur as follows:
10K miles - 12 months >> A service
15K miles - 24 months >> B service
20K miles - 36 months >> A service
30K miles - 48 months >> B service
40K miles - 54 months >> A service
50K miles - 60 months >> B service
Is your car indicating "B3" service? That would confirm that something such as the above has occurred.
10K miles - 12 months >> A service
15K miles - 24 months >> B service
20K miles - 36 months >> A service
30K miles - 48 months >> B service
40K miles - 54 months >> A service
50K miles - 60 months >> B service
Is your car indicating "B3" service? That would confirm that something such as the above has occurred.
Thread Starter
Member
Joined: May 2022
Posts: 162
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From: Limerick, Pa
GLC300
A and B services alternate and occur at 12 month or 10K mile intervals, whichever is reached first. While you're at 50K / 60 months, it would seem an A service should be due, but mileage/time accumulation could occur as follows:
10K miles - 12 months >> A service
15K miles - 24 months >> B service
20K miles - 36 months >> A service
30K miles - 48 months >> B service
40K miles - 54 months >> A service
50K miles - 60 months >> B service
Is your car indicating "B3" service? That would confirm that something such as the above has occurred.
10K miles - 12 months >> A service
15K miles - 24 months >> B service
20K miles - 36 months >> A service
30K miles - 48 months >> B service
40K miles - 54 months >> A service
50K miles - 60 months >> B service
Is your car indicating "B3" service? That would confirm that something such as the above has occurred.
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If your 40K was B2 and it was 2 years ago, you should do B3 as the oil change and brake fluid change per MB recommendations. If your B2 was 12 months ago, you should be OK with just the oil change.
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Thread Starter
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From: Limerick, Pa
GLC300
It says B3 is due for some reason. I'm the second owner and bought the vehicle with 24k on it. I got an A done at 30k then a B at 40k.
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A and B services are fundamentally an oil change and an oil change and brake fluid change, respectively. If you did the B service at 40K 12 or fewer months ago, all you need now at 50K is an oil change. After resetting the service indicator, it should report something like "A service (or B service) due in 365 days".
Thread Starter
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Joined: May 2022
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From: Limerick, Pa
GLC300
Since your B service at 40K, how much time has passed? If 12 months or less, then at 50K, you should be seeing an A3 service due. If more than 12 months, I'm not sure which indication might appear.
A and B services are fundamentally an oil change and an oil change and brake fluid change, respectively. If you did the B service at 40K 12 or fewer months ago, all you need now at 50K is an oil change. After resetting the service indicator, it should report something like "A service (or B service) due in 365 days".
A and B services are fundamentally an oil change and an oil change and brake fluid change, respectively. If you did the B service at 40K 12 or fewer months ago, all you need now at 50K is an oil change. After resetting the service indicator, it should report something like "A service (or B service) due in 365 days".
Last edited by LenniePaz; Aug 25, 2024 at 02:18 PM.
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Yes -- there are other services that are recommended at both A and B service intervals once you're past A1 and B1. At 50K, spark plug replacement should be done. MB no longer publishes a maintenance guideline booklet, but one of the last ones I've found is from 2016 (attached). This should give you some idea of what should have been done in the past and what should be done now.
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Just a bit more information about A and B service indications.
I DIY my A's and B's every 5K miles / 12 months, and I'm coming up at the end of this month (Sep) for my next service at ~23K miles / 60 months. This will be my 5th service, and the Assyst Plus is telling me "A3 Due in 28 Days".
I reset the service indicator at each service, and my indications have been:
5028 miles / 12 months -- A1
10014 miles / 22 months -- B1
14473 miles / 34 months -- A2
19086 miles / 48 months -- B2
~ 23000 miles / 60 months -- A3
I DIY my A's and B's every 5K miles / 12 months, and I'm coming up at the end of this month (Sep) for my next service at ~23K miles / 60 months. This will be my 5th service, and the Assyst Plus is telling me "A3 Due in 28 Days".
I reset the service indicator at each service, and my indications have been:
5028 miles / 12 months -- A1
10014 miles / 22 months -- B1
14473 miles / 34 months -- A2
19086 miles / 48 months -- B2
~ 23000 miles / 60 months -- A3
