What do Acura maintenance codes like A1 or B12 mean?

The letter is the main service: A is an oil change and B adds a filter and inspection. The numbers add items such as tire rotation, filters, fluids or the timing belt.

When should my Acura timing belt be replaced?

When the Maintenance Minder shows code 4 on V6 engines with a belt, or by age if the car has low miles. We replace the water pump and tensioner at the same time.

Does my Acura have a timing belt or chain?

Most Acura V6 engines use a belt. The 2013–2018 RDX also uses a V6 with a belt, while four-cylinder engines in the TSX, ILX, other RDX years and the Integra use a chain. We confirm your engine.

What is VCM, and is it bad for my engine?

Variable Cylinder Management shuts off cylinders to save fuel. It can increase spark plug fouling, oil use and engine mount wear. We check those items.

Do you service SH-AWD?

Yes. We change the rear differential fluid with the specified Acura fluid and diagnose AWD noises and warnings.

Why does my MDX shift hard?

Old fluid, software or adaptations are common causes. We check the fluid and data before recommending a repair.

Can I drop off my Acura at the Ridgecrest Road shop?

Yes. Johnny's Auto Repair on Ridgecrest Road can check in your Acura and evaluate it. When the repair calls for our luxury and European specialists, the Ridgecrest team will recommend our D Street shop at 17033 D St, (760) 241-4253.

How much does Acura repair cost?

The cost depends on your model and what the inspection supports. Our D Street shop provides a free written estimate before approved repairs begin. Call (760) 241-4253 with your year, model and mileage.

Where is the shop for Acura repair in Victorville?

Johnny's Radiator and Auto Repair is at 17033 D St, Victorville, CA 92395. Call (760) 241-4253. Hours are Monday to Friday 8am to 5pm and Saturday and Sunday 8am to 3pm.

Acura Repair in Victorville, CA

Acura Repair · Victorville CA

Where can I get Acura repair in Victorville, CA?

For Acura repair in Victorville, CA, our D Street shop at 17033 D St works on the MDX, RDX and ZDX SUVs and the TLX, TL, TSX, ILX, RLX, RL and Integra. It is part of our luxury and European auto repair work. Call (760) 241-4253 for a free written estimate.

Acura engines are known for reaching very high mileage, and the dash tells you exactly what each one needs through the Maintenance Minder. The codes, like A1, B12 or B124, can look confusing, but each letter and number stands for a specific job.

The two Acura items that matter most for long life are the timing belt on the 3.5L and 3.7L V6, and the correct fluids for SH-AWD and the automatic transmission. We also see Variable Cylinder Management effects on many V6 models.

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When should I bring my Acura in?

The Maintenance Minder shows a code with a 4
My V6 Acura's timing belt is around seven years old
I feel a vibration at cruising speed
My SH-AWD groans in tight turns
My MDX shifts hard or shudders
My power steering whines on cold mornings

Acura Maintenance Minder codes explained

The Maintenance Minder shows a main code, A or B, with one or more numbers. It decides when service is due based on how you drive. Here is what each part means.

A: Replace the engine oil.
B: Replace the engine oil and filter, and do a full inspection of the brakes, suspension, steering and fluids.
1: Rotate the tires.
2: Replace the engine and cabin air filters, and inspect the drive belt.
3: Replace the transmission fluid, and on some models the transfer case fluid.
4: Replace the spark plugs, and on V6 engines with a belt, the timing belt; inspect valve clearance.
5: Replace the engine coolant.
6: Replace the rear differential fluid on SH-AWD and other AWD models.
7: Replace the brake fluid.

Acura in the High Desert: heat, towing and dust

The Maintenance Minder adjusts for how you drive, but it doesn't measure air temperature or dust. Desert heat ages the rubber timing belt by time, not miles, so a low-mileage Acura still needs its belt replaced by age.

An MDX towing a trailer up the Cajon Pass works its transmission and rear differential hard. Those fluids break down sooner in heat, so we recommend checking them more often if you tow.

Fine desert dust clogs engine and cabin air filters quickly. Code 2 may come up later than the filters actually need, so we inspect them at every visit.

D Street Acura service compared with the dealer

We use Honda- and Acura-capable scan tools that read the Maintenance Minder, reset it after service, run transmission and AWD tests and perform relearns after repairs.

We use the fluids Acura calls for: Acura automatic transmission fluid, the correct SH-AWD or VTM-4 rear differential fluid and Acura-type coolant. Using the wrong fluid in these systems causes problems, so we match them carefully.

If a software update is available from Acura for your transmission, we tell you so you can decide how to get it.

Acura problems we diagnose and repair

Here is what we see on Acura engines and drivetrains, and how we confirm each one.

V6 timing belt due

J-series 3.0L, 3.2L, 3.5L and 3.7L V6 in the MDX, 2013–2018 RDX, TL, TLX V6, RL, RLX and ZDX

What you notice: Maintenance Minder code 4, or the belt is at its age or mileage limit. There is usually no other warning.
Usual cause: These engines use a rubber timing belt. If it breaks, the valves can hit the pistons.
What D Street checks: We replace the belt, water pump, tensioner and idler together and inspect the drive belt. See timing belt replacement.

Variable Cylinder Management effects

3.5L V6 with VCM in many 2008-and-newer MDX, TL and TLX models

What you notice: A vibration at cruising speed, oil consumption, or misfire codes from fouled spark plugs on certain cylinders.
Usual cause: VCM shuts off cylinders to save fuel. Over time this can foul plugs, increase oil use and wear the engine mounts.
What D Street checks: We read misfire data, inspect the plugs on the affected bank and check the engine mounts.

SH-AWD rear differential fluid

SH-AWD MDX, RDX, TLX, TL and RLX

What you notice: A groan or shudder in tight turns, or an AWD warning light.
Usual cause: The rear differential uses its own Acura fluid that breaks down with heat and use.
What D Street checks: We change it with the specified Acura fluid, inspect for leaks and test the AWD system.

MDX transmission shifting

MDX with the six-speed and nine-speed automatics; TLX with the eight-speed dual-clutch

What you notice: Harsh or delayed shifts, a shudder or a hesitation pulling away.
Usual cause: Old fluid, software that needs an update, or an adaptive relearn. Internal wear is less common.
What D Street checks: We check fluid condition, read transmission data and recommend fluid service, a relearn, a repair or a remanufactured transmission based on the findings.

Power steering pump whine

Older MDX and TL with hydraulic power steering

What you notice: A whine when turning, especially on cold mornings.
Usual cause: The pump or its intake hose and O-ring draw in air.
What D Street checks: We inspect the fluid for foam and check the intake hose before replacing the pump.

Turbo RDX and Integra service

2.0L turbo in the 2019-and-newer RDX; 1.5L turbo in the Integra

What you notice: Oil level that looks too high, a fuel smell in the oil, or reduced power.
Usual cause: Turbo engines that see many short trips can collect fuel in the oil.
What D Street checks: We check the oil condition and level, and recommend oil change timing based on how you drive.

Acura questions we answer every week

“My Acura shows a B124 code”

That means oil and filter, inspection, tire rotation, filters and the timing belt and spark plugs on V6 models. We explain and quote each item.

“My MDX vibrates at highway speed”

On VCM engines, worn engine mounts are a common cause. We check the mounts and VCM operation.

“My SH-AWD groans when I turn into a parking spot”

That is often old rear differential fluid. We change it with the correct Acura fluid.

Acura repair and maintenance at Johnny's on D Street

We read your Maintenance Minder code and service history, then quote exactly the items it calls for, plus anything we find on inspection.

For older Acuras, we check whether the timing belt has been replaced by age, even if the mileage is low.

Maintenance Minder service for every code
V6 timing belt, water pump and tensioner service
VCM misfire and vibration diagnosis
SH-AWD and VTM-4 rear differential service
Transmission fluid service and relearns
Engine mount inspection and replacement
Power steering diagnosis
Turbo RDX and Integra oil checks

How we take care of your Acura at D Street

We read your Maintenance Minder code and service records.
We inspect the items the code calls for and check belts, filters and fluids for desert wear.
We scan modules and road-test for any shift, vibration or AWD concern.
You get a free written estimate with each Maintenance Minder item listed.
We perform the approved service with Acura-specified fluids.
We reset the Maintenance Minder and road-test the vehicle.

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Frequently Asked Questions

What do Acura maintenance codes like A1 or B12 mean?: The letter is the main service: A is an oil change and B adds a filter and inspection. The numbers add items such as tire rotation, filters, fluids or the timing belt.
When should my Acura timing belt be replaced?: When the Maintenance Minder shows code 4 on V6 engines with a belt, or by age if the car has low miles. We replace the water pump and tensioner at the same time.
Does my Acura have a timing belt or chain?: Most Acura V6 engines use a belt. The 2013–2018 RDX also uses a V6 with a belt, while four-cylinder engines in the TSX, ILX, other RDX years and the Integra use a chain. We confirm your engine.
What is VCM, and is it bad for my engine?: Variable Cylinder Management shuts off cylinders to save fuel. It can increase spark plug fouling, oil use and engine mount wear. We check those items.
Do you service SH-AWD?: Yes. We change the rear differential fluid with the specified Acura fluid and diagnose AWD noises and warnings.
Why does my MDX shift hard?: Old fluid, software or adaptations are common causes. We check the fluid and data before recommending a repair.
Can I drop off my Acura at the Ridgecrest Road shop?: Yes. Johnny's Auto Repair on Ridgecrest Road can check in your Acura and evaluate it. When the repair calls for our luxury and European specialists, the Ridgecrest team will recommend our D Street shop at 17033 D St, (760) 241-4253.
How much does Acura repair cost?: The cost depends on your model and what the inspection supports. Our D Street shop provides a free written estimate before approved repairs begin. Call (760) 241-4253 with your year, model and mileage.
Where is the shop for Acura repair in Victorville?: Johnny's Radiator and Auto Repair is at 17033 D St, Victorville, CA 92395. Call (760) 241-4253. Hours are Monday to Friday 8am to 5pm and Saturday and Sunday 8am to 3pm.

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Johnny's Radiator and Auto Repair · 17033 D St, Victorville, CA 92395

Monday – Friday: 8:00am – 5:00pm · Saturday & Sunday: 8:00am – 3:00pm

Exterior of Johnny's Radiator and Auto Repair on D Street

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