Your Acura is showing B1237, which translates to an engine oil and filter change with a multi-point vehicle inspection plus a tire rotation, engine and cabin air filter replacement with a drive belt inspection, a transmission fluid change (plus transfer fluid on AWD and SH-AWD) and a brake fluid replacement.
Maintenance Minder codes are built rather than looked up. The letter tells you which oil service applies, and each digit adds a specific job that the car has been counting down independently. That is why B1237 may appear once and never again in the same combination.
Most owners have B1237 done at an Acura dealer or an independent specialist. Because Acura and Honda share a parts network, a Honda service department can also do the work, frequently for less money.
Acura B1237 Service Cost
Expect the Acura B1237 service to come in between $400 and $705. Your model and local labor rate move it within that band. Ask for the work broken out line by line — B1237 is several distinct services on one invoice, and each is priced separately.
| Item | What it covers | Typical cost |
|---|---|---|
| “B” | Oil and filter change, plus multi-point inspection | $90 – $180 |
| “1” | Tire rotation | $30 – $45 |
| “2” | Engine and cabin air filters, drive belt inspection | $100 – $150 |
| “3” | Transmission fluid (and transfer fluid on AWD/SH-AWD) | $100 – $200 |
| “7” | Brake fluid | $80 – $130 |
| Total Acura B1237 service | $400 – $705 | |
| Doing it yourself (parts only) | around $220 | |
Brake Fluid in B1237 Runs on a Calendar, Not Your Odometer
Sub-item 7 is the odd one out in B1237. Every other item counts down against how you drive; brake fluid counts down against time. Acura’s own guidance is explicit about it: if the Maintenance Minder has not asked for item 7 within 36 months of the last reset, replace the brake fluid anyway. Three years, whatever the mileage says.
The reason is that brake fluid is hygroscopic. It draws moisture out of the air through the reservoir and the flexible hoses, and water lowers the fluid’s boiling point. Fluid that boils under sustained braking turns to vapor, and vapor compresses in a way liquid does not. That is the long, soft pedal drivers describe on a long descent. A garage queen with 3,000 miles a year is no more exempt from this than a commuter car.
Acura specifies DOT 3, and the job is a genuine bleed at all four corners until clean fluid comes through — not a top-up of the reservoir. Old fluid is visibly darker than new, so it is one of the few services you can sanity-check yourself by looking. If a quote for B1237 looks suspiciously cheap, confirm the brake line is a flush rather than a level check.
When Is the Acura B1237 Service Due?
There is no fixed mileage for this. The Maintenance Minder models oil life from engine temperature, journey length, load and engine revolutions, so a car used for short winter trips reaches zero far sooner than one covering steady highway miles. Most Acura owners see the oil item come round somewhere between 5,000 and 12,000 miles.
You get plenty of notice. A wrench appears at 15% oil life, the warning becomes firmer at 5%, and at 0% the readout switches to a negative distance showing how far overdue the car has become. Fifteen percent is when to call the shop, not when to worry.
Brake fluid is the exception inside B1237. Acura runs it to a three-year calendar rather than a distance, so it can fall due on a car that has barely moved.
B1237 Across the Acura Range
Every Acura with a Maintenance Minder can produce B1237 — from the ILX and Integra through the TLX and RDX to the MDX, RLX, ZDX and TSX. The service list stays constant across the range while the invoice does not, because oil capacity, fluid specification and labor time are all engine-dependent.
Check your owner’s manual for the exact fluid specifications your engine needs before booking.
Does Acura Complimentary Maintenance Cover B1237?
Not in full. The complimentary program is deliberately narrow: A1 and B1 services only, running two years or 24,000 miles on model year 2023 and 2024 vehicles and just the first scheduled service within 12 months or 12,000 miles from 2025 onward. B1237 contains work outside that boundary.
That does not make it worthless here. The oil and rotation component of B1237 can still fall inside the program while the additional items are billed, so insist the invoice separates them. Note too that coverage transfers with the car, so a used Acura may still have time left on it.
What B1237 Means for SH-AWD Acuras
The B1237 work itself is identical whether your Acura drives the front wheels or all four. What changes is what tends to arrive alongside it. Super Handling All-Wheel Drive uses a torque-vectoring rear unit that Honda does not fit to its own models, and it carries a fluid service of its own: sub-item 6, rear differential fluid, due at around 15,000 miles initially and every 30,000 miles after.
Sub-item 3 is also affected. On an SH-AWD car the transmission fluid change in B1237 brings the transfer unit with it, which is a separate drain and fill and a separate labor line. A quote that looks high next to a front-wheel-drive Acura may be entirely legitimate.
So if you drive an SH-AWD MDX, RDX, TLX or ZDX, do not be surprised to see B1237 arrive with a 6 attached. Front-drive Acuras never show a 6, because there is no rear differential to service.
Related Acura Service Codes
- Acura A1237 service code
- Acura B123 service code
- Acura B137 service code
- Acura A123 service code
- Acura B135 service code
- Acura A137 service code
- Acura B124 service code
- Acura B125 service code
- All Acura Maintenance Minder codes — the full reference table
- How to reset the Acura Maintenance Minder
Acura B1237 Service FAQ
What does the Acura B1237 code mean?
The “B” is an oil and filter change with a multi-point inspection, and each digit after it is a separate job that has come due at the same time. For B1237 those are a tire rotation, engine and cabin air filter replacement with a drive belt inspection, a transmission fluid change (plus transfer fluid on AWD and SH-AWD), a brake fluid replacement. It is a bundle of independent services, not one procedure.
How much does the Acura B1237 service cost?
Typically $400 to $705 at a dealer or independent shop, depending on your model and local labor rate. The breakdown by sub-item is in the table above. Acura and Honda dealer pricing is broadly comparable, so a Honda service department is worth a call for a second quote.
Can I do the Acura B1237 service myself?
Partly. The oil and rotation are easy. A proper brake fluid flush needs bleeding at all four corners in the right sequence, and air left in the system gives you a soft pedal — it is doable at home with the right kit but it is not a beginner job. Parts alone come to roughly $220.
Is B1237 covered by Acura complimentary maintenance?
Not fully. The program covers A1 and B1 services for two years or 24,000 miles on 2023 and 2024 cars, and only the first scheduled service within 12 months or 12,000 miles on 2025 models. B1237 includes work beyond that, so expect the additional items to be chargeable. The oil and rotation portion may still be covered, so ask for an itemized invoice.
Does the B1237 code mean something is wrong with my Acura?
No. B1237 is a maintenance reminder shown with a wrench symbol, generated by the Maintenance Minder’s own countdown. It is not a diagnostic trouble code. A check engine light comes from a different system entirely and points to a stored fault. If both are showing they are unrelated, and the check engine light is the one to look at first.
How do I reset the B1237 code?
An Acura dealer will reset it as part of the job. Doing it yourself: touchscreen models use Settings, then Vehicle, then Maintenance Reset, while older cars use the SEL/RESET stalk button or trip knob held for around ten seconds with the ignition on. On a multi-item code like B1237 you can reset sub-items individually — do that rather than clearing everything, or the car will stop tracking jobs you have not actually done. Our Acura Maintenance Minder reset guide covers each method by model.