I own a 20210 MDX and have a TPMS System Error on my maintenance minder screen. This occurs in the winter when it gets cold out. A mechanic that I know assures me that the problem is the batteries in each wheel's sending unit and will be solved if I replace them.
I have an OBDII diagnostic reader, but it doesn't read TPMS system information. Do you agree that it's the batteries in the sending units?

Also, gas mileage is not great on this car and It has degraded a small amount over time. I am thinking of refurbishing the fuel injectors. I saw a kit of 6 for under $25. on ebay which is comprised of o-rings, a retainer, filter, and cap. I as thinking of buying one new Acura injector, and then swapping out the other 5 one at a time after installing the rebuild kist. Has anyone done this and do you think refurbishing fuel injectors is a good idea?

Thanks.

 

A 2010 MDX with original TPMS batteries will be way overdue for replacement, TPMS batteries last 8-10 years MAX

 

Uhhh, what batteries?
TPMS sensors are usually piezoelectric devices.

 

Cold temps make tire pressure drop. Make sure the pressure is even all around after sitting for at least 30 min. I would recommend setting cold pressure 1 to 2 psi over oe spec to extend tire longevity.

If you have one bad sensor, you can order one new one and have a tire shop replace it. There's no reason to try to service it.

Swapping seals wont make it save fuel. Cleaning the injectors in a flush machine can help if the flow is restricted. But, that's usually a mail in service. Gas mileage is horrible because its a heavy suv with an awd system.

 

maybe newer ones are, but the older ones definitely have non user-serviceable button cell batteries in them

 

I agree that the gas mileage on an MDX is a function of all wheel drive and the vehicle's weight. But, after 171,000 miles, I'm curious if an injector refurbishment wouldn't help. Yes, I agree seals won't make a difference, but the kit includes a small, cone shaped filter which could be clogged or dirty. Also, I'm wondering if a cleaning of the nozzle wouldn't also help.

I don't see Acura manufacturing these kits. It looks like their only available in the aftermarket.

 

^
If I was going to go as far as performing the removal process for 171K 15 y/o OEM fuel injectors, I would:
1) remove them all, and as 619rcr suggests, send them out to have them cleaned / serviced / tested from someone similar to the link below.
Ultrasonic Fuel Injector Cleaning | | - Pro Flow- Pro Flow

Reason being, the original OEM injectors, rebuilt from a service like the above, are going to be better than any low $$ non-oem fuel injector 'special' on ebay.

2) if MPG was not satisfactory to my liking, after rebuilt injectors were reinstalled, than I'd way between a decent lower cost aftermarket set (RockAuto?) or just shoot the wad on all new OEM's at $85.45 per and hope for the best.