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That dash light Just came on - now what?

That dash light Just came on - now what?

Car Connection Workshop Jan 16, 2026 51 min
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About this episode

Understanding dashboard warning lights can save you from costly repairs and unnecessary panic. Niall Motormouth Jenkins dives deep into what those lights really mean, emphasizing that they are your vehicle's way of communicating issues before they escalate. He shares personal anecdotes and insights on the importance of proper diagnostics versus simply replacing parts. The episode also highlights the evolution of vehicle technology and the significance of consulting true diagnosticians for accurate repairs. Tune in for practical advice and a few laughs along the way.

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Technical Too Afraid to Ask
Term

manual transmission

"...neglecting your vehicles, automatic or manual transmission, particularly the automatics, you get into a big hole very, very quickly with repairs"

A manual transmission is a type of car system where you have to change gears yourself using a stick and a pedal. It gives you more control but can be harder to drive, especially in busy traffic.

Term

automatic transmission

"...neglecting your vehicles, automatic or manual transmission, particularly the automatics, you get into a big hole very, very quickly with repairs"

An automatic transmission is a part of a car that changes gears for you, so you don't have to do it yourself. It makes driving easier, especially in traffic.

Brand

Honda

"...really recommending, you know, like Honda, Toyota, Nissan,..."

Honda is a car company from Japan that makes popular and dependable vehicles.

Brand

Nissan

"...really recommending, you know, like Honda, Toyota, Nissan,..."

Nissan is a car company from Japan that makes a variety of vehicles, including cars and trucks.

Concept

transmission problem

"...with all sharing the exact same transmission problem."

A transmission problem is when the part of the car that helps it change gears isn't working properly, which can make driving difficult.

Car

Honda Civic DX

"...How does a 99 Honda Civic DX get 321,000 kilometers on it? Man, I couldn't even get one year on the Cadillac I drove..."

The Honda Civic DX is a version of the Honda Civic from 1999. It's known for being dependable and good on gas, making it a popular choice for many drivers.

Car

Toyota Supra

"Yeah, I got a Supra, there you go."

The Toyota Supra is a popular sports car that many people love for its speed and ability to be customized. It's a favorite among car fans.

Car

Buick LeSabre

"I did have a really good Buick with Saber that I love, it was really good."

The Buick LeSabre is a big car that people liked for being comfortable and reliable. The 1978 version is one of the older models that many remember fondly.

Term

winter beater

"It was a 1978, that was my winter beater and I bought that through some friends in the trade."

A winter beater is a car that you use in the winter, especially when the weather is bad. It's usually an older car that you don't mind getting a bit damaged from snow and ice.

Part

floor mats

"I told him, I said, you gotta put floor mats in, get some really good floor mats. Now, didn't listen, took the floors out on both sides, passenger and front because it was soaking wet all winter"

Floor mats are like carpets for the inside of your car. They help keep the floor clean by catching dirt and spills, and you can take them out to clean them.

Part

catalytic converter

"Yeah, the 2007 FJ Cruiser has decided that one or two of the catalytic converters are lazy."

A catalytic converter is a part of the car's exhaust system that helps clean up the gases that come out of the engine. It makes the car better for the environment.

Car

Toyota FJ Cruiser

"...st a matter of money, that's all. Yeah, the 2007 FJ Cruiser has decided that one or two of the catalytic con..."

The Toyota FJ Cruiser is a tough-looking SUV that can handle rough terrains and is designed for adventure. It has a unique style that many people love, but some older models, like the 2007, can have problems with parts that help clean the exhaust, which might cost money to fix.

Term

OBD-1 system

"...we don't like to talk about the feedback carburetor in the OBD-1 system. That thing was on nightmare for us in the service space."

OBD-1 is a system in cars that helps detect problems with the engine. It was used in older cars and shows warning lights when something is wrong.

Term

check engine light

"...and now we have a proper check engine light. That's where that came from. Check engine light was the midterm, OBD2."

The check engine light is a warning light on your car's dashboard that tells you there might be something wrong with the engine. It's important to get it checked out to avoid bigger problems.

Term

OBD2

"So now we have systems that we moved into another era where we got into OBD2, onboard diagnostics two, and now we have a proper check engine light. That's where that came from."

OBD2 is a system in cars that helps check if everything is working properly. It can tell mechanics what's wrong with the car by using a special connector.

Term

coolant system

"So when we went to OBD2, what we found was still a lot of the monitored systems on your vehicle, so I'll give you an example, the coolant system."

The coolant system helps keep the engine from getting too hot by moving a special liquid around to cool it down. If it doesn't work, the engine can overheat.

Part

fuel filter

"There isn't one, that's called your fuel filter, which is a fuel purifier. We're gonna crack that open a little bit too in another program."

The fuel filter cleans the fuel that goes into the engine, making sure it doesn't have dirt or other bad stuff that could cause problems.

Term

TPMS

"And then we have TPMS, tire pressure monitoring system."

TPMS is a system that checks if your tires have enough air. If the air pressure is too low, it lets you know so you can fill them up and stay safe on the road.

Term

evap system

"Yeah, so we have on the evap side, that's your fuel cap. So all those are most of your service lights."

The evap system helps keep harmful fuel vapors from getting into the air. It includes parts like the fuel cap that seals the fuel tank and sensors that check for leaks.

Term

transmission control module (TCM)

"And then we have transmission control modules, TCMs, that are also monitoring shift points and pressure points inside the transmission."

The TCM is like a computer for the car's transmission. It helps decide when to change gears to make driving smoother and more efficient.

Term

engine control module (ECM)

"then you have another ECM that's monitoring everything on the engine. Pretty much everything, except the driver."

The ECM is another computer in the car that helps manage how the engine works. It makes sure the engine runs well and meets emissions standards.

Term

diagnostics

"...we gotta start asking questions and checking things. That's called diagnostics. If I had a nickel for every time someone used one of those code readers..."

Diagnostics is how mechanics figure out what's wrong with a car. They use tools to check for problems and see if parts are working correctly.

Part

oxygen sensor

"...someone used one of those code readers and changed an oxygen sensor or a fuel cap..."

An oxygen sensor is a part that checks how much oxygen is in the car's exhaust. It helps the engine run better and use fuel more efficiently.

Part

fuel cap

"...changed an oxygen sensor or a fuel cap, I'd probably be talking to you from some very warm address right now."

The fuel cap is the lid that keeps the gas in the car's tank. If it's not on tight, it can cause problems and make the car less efficient.

Term

Trinostics

"That's called Trinostics. That's when the parts cannon comes out and here's where the term money light comes in."

Trinostics is a method used by mechanics to figure out what's wrong with a car. Instead of just guessing and replacing parts, they use special tools to find the real problem.

Term

parts cannon

"That's when the parts cannon comes out and here's where the term money light comes in."

The 'parts cannon' is when mechanics just start replacing different parts of a car to see if it fixes the problem, instead of figuring out what’s really wrong first. It can end up costing a lot of money.

Term

money light

"and here's where the term money light comes in. The parts cannon comes out and we just start firing parts on it, but the service light still comes back on."

The 'money light' is a warning light on your car's dashboard that tells you something is wrong and might cost you money to fix. It’s a way of saying that repairs could be expensive.

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