Piston Slap: Foiled by a Dome Light?

Peter writes:

I drive a 2010 Toyota Prius. From top to bottom, I’m thoroughly impressed by the technology in this car. And yet this engineering marvel is so easily disabled by its inferior owner leaving a dome light on overnight and draining the 12V battery.

Is there any technical reason cars allow the 12V battery to be drained down beyond the point where the car will start? Who needs that extra 6 hours of dome lighting?

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Piston Slap: Why You So Stupid, Smart Junction Box?!

TTAC commentator claytori writes:

Hello Sajeev,

This email is about my 80-year-old mother-in-law Shirley, who is a sweetie and thinks I can fix anything. I hit the MIL jackpot.

Shirley owns a 2010 Lincoln MKZ 3.5 V6 with about 35,000 miles on it. About a year ago, the battery died on the Lincoln. CAA replaced it with another battery with a 13-month replacement warranty, on which less than 1 week remains.

Two weeks ago, the car wouldn’t start again, so I boosted it from my Saab 9-3, which sits beside the Lincoln in a heated garage. It started right away. As she doesn’t drive it more than about 3 miles at a time, I drove the car for a day to charge up the battery.

The battery was great for two days — then dead again.

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Piston Slap: A Fusion of Moonroof Drainage Problems? (Part II)

TTAC commentator kericf writes:

Sajeev,

I know you experienced the deluge of rain in Houston (Last October, and it was pretty bad. —SM). We live on the north side of the city and own a six-month-old 2015 Ford Expedition EL that has been outside its whole life (it doesn’t fit in the garage). It has seen much heavier rain than we had this weekend, but not a storm that lasted so long.

Water somehow got into the headliner and dropped into the interior. It does have a sunroof and roof rack. The dealership has only had it a day but hasn’t been able to figure out the source of the leak. It hasn’t leaked before. We are baffled and I have a feeling the dealership will be too.

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Piston Slap: Sucking At Fluid Changes?

Longtime TTAC Commentator ajla writes:

Hi Sajeev,

I do a more through job at the time of purchase, but every year after I do a drain/refill on the radiator and replace some transmission fluid by using my fluid extractor to vacuum up as much ATF as possible through the dipstick tube.

I know that I’m not getting all the fluids exchanged this way, but my question is how much of a positive impact is this regiment actually having on my cars? Am I just wasting my time? I haven’t suffered a mechanical failure since I started doing this, but I don’t know if that proves much.

Keep in mind that the vehicles I tend to own are 20 to 30 years old.

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  • EBFlex "I've only filled the gas tank three times in 2500 miles"Assuming you went from 0 gallons to full (17.2), you have averaged almost 50MPG over those 2500 miles. 50 MPG in a Jeep Wrangler. To all of you EV nut jobs, tell me again how PHEVs are not the absolute best thing to happen to automobiles since the wheel. And tell me how they don't make EVs look like the awful play toys that they are.
  • MRF 95 T-Bird The Buick 215/3.5-liter aluminum V8 was one of GMs great engines. Unfortunately GM being GM in one of their greatest mistakes was selling off the tooling to BL. If they kept it around and improved upon it it would have been a fine motor for their compacts and midsize models through the OPEC oil crisis.
  • Chris P Bacon Not sure why a '21 is getting reviewed, because there have been improvements to the 4xe. I've got a '22 4xe Sahara. May 2022 build in High-Velocity yellow with a soft top. As soon as it was announced I knew I wanted to try it, not for the fuel mileage, but for the technology. I don't have a Level 2 charger, it charges fully overnight on the included Level 1. I see an indicated range of 27 miles regularly. Today it indicated 29 when I unplugged. I've only filled the gas tank three times in 2500 miles, a full charge costs me about $3 based on my current electricity supplier. I don't experience the rough transitions between electric and gas, so maybe Jeep figured it out? It's stupid fast when using all the power off the line. So much so that it will break the rear wheels loose when you stomp on it. I agree that plugin hybrids are the future. I see no need for a pure electric. This is the way to go.
  • RHD The word B R O N C O written in contrasting paint on the dashboard is quite unnecessary. The passenger certainly knows what kind of vehicle he or she is in. That detail is a big fail. The red and white Bronco looks great, especially with tires that have honest-to-goodness sidewalls on them.
  • Luke42 Aren't those trim levels just different colors of paint?That's what they sound like, at least. 🤷‍♂️