Dealer VS Manufacturer recommended services?

I'm reaching out for advice following a dealership visit for a Toyota Care-covered oil change on my 2020 Toyota Tacoma TRD-Offroad, which has just under 23K miles. The dealership recommended several maintenance tasks, claiming they align with manufacturer suggestions:

• Serpentine Belt Replacement: $390 (3yr/30,000 miles)
• Front & Rear Diff Service: $360 (3yr/30,000 miles)
• Fuel Injection Service: $260 (3yr/30,000 miles)
• Brake Fluid Flush: $180 (3yr/30,000 miles)
• Power Steering Fluid Exchange: $140 (3yr/30,000 miles)

The dealership's recommendations were based on the vehicle's age rather than its mileage, fluid condition, or vehicle wear. Notably, while the differential fluid exchange was recommended, the manufacturer's maintenance schedule specifies this service for vehicles subjected to off-road use, not based on a specific mileage interval. Additionally, the schedule mentions propeller shaft lubrication at 30k miles — a point not raised by the dealership.

This discrepancy raises questions about the necessity of these services strictly as preventative maintenance beyond the manufacturer's guidelines. I'm evaluating whether to perform these services myself or engage my local mechanic, should they be deemed essential. I'm already planning on servicing the Front and Rear diff, although I was not planning to do it this month,

As for these other services, are they advisable to do given my vehicle's current age and mileage? The near $400 cost for replacing the serpentine belt which is by all means a ~$80 part and 20 minute job has not helped my level of trust in the dealership.

 

seems pretty normal.
Not sure what the question is.
You want dealer to work for free? Good luck. They have a per hour labor cost. This is advertised.

has not helped trust? They provided a free inspection and written recommendations.
Toyota service has a reputation. It’s googleable. Don’t need to go there to find intervals.

Intervals are age/miles whichever comes first. Pretty standard.

prop shaft grease depends if it has zerk fittings or not.
Sounds like a gravy quote.

for a belt
You pop the hood. Reach inside. Change the belt. Done.

 

The question is are these indeed services that should be done, as they aren't mentioned on the Manufacturer's service schedule for the vehicle.
I'm not expecting them to do them for free, the markup seems rather high for a 20 minute job though, I would expect more ~260 or so.
Not bringing up or doing anything in regards to the propeller shafts which IS on the manufacturer's list also raised an eyebrow.

Unless the manufacturer calls for it to be done more frequently, I'm also used to changing fluids such as coolant, gear oil, power steering every 5 years or when they start to show visible discoloration, whichever comes first.
Serpentine when it starts to show visible signs or age such as cracking or begins to chirp.

 

https://www.tacomaworld.com/threads/30-000-mile-service-costs-1-100.780129/

We can't tell you if something isn't required without personally inspecting it, but I'd say most of that is likely not necessary to do at this time. Most likely, service center trying to sell you service.

 

Not sure when serp belt is due. Mines probably got over 30k and seems to have started squeaking. I’ll probably throw a new one on.

P/S can be done at 30-40k. Coolant 50k. Gear oils 30k. Brake fluid 1-2yr. Fuel service is personal preference.

services book at least an hour each. Dealerships are one hour minimum for anything. Hour labor is $230+. No opinions involved. math. Either something you do or you don’t. To each his own.
Had to do my laundry. I put it in the wash. Then the dryer. Then I folded it. Did not pay someone else to. Am not in the position to.
had some cereal the other day. Poured the milk held the spoon and everything. Then washed the bowl. Poured from the box as well.

not paying someone to change my oil. It is not difficult and require a specific skillset and equipment like structural welding. I walk outside. There is parking lot. Bolts in and out no stripping. Zero labor charge. Minimal parts mark up. Zero transit processing waiting room time.

you could wait miles
Whether it’s 25 30 35k doesn’t really matter. It’s binary. Vehicle is either maintained or it’s not. It’s either a person doing their diff fluid around 30k, or are the type of folk to be past 100k and never have done it. Two camps.

 

Thanks, that thread pretty much aligns with what my inclination was. I plan to service the diff fluid as I HAVE driven in mud a couple of times, albeit either myself or at my local mechanic depending on weather, free time and mood.

 

I plan to do the differentials myself. Even I can squeeze under the truck enough to do that. New seals and diff fluid should be far less than $360. The warning I have heard about differential service is to first ensure you can remove the "fill" plug before you drain the entire differential ... seems like common sense, but I would probably have rushed to drain first myself.

https://www.tacomaworld.com/threads/changing-differential-fluid-a-step-by-step-how-to.24545/