Marc Favreau

The author has 30+ years of automotive experience and has assembled the most extensive collection of symbols and warning lights anywhere (over 1,000!) and can help you open and start any keyless start car with a dead key fob battery. BA, St. Joseph's, ME: MS, RPI, NY

Most commented posts

  1. Information Displays and Message Centers — 10 comments

Author's posts

How much energy does regenerative braking recover?

Regenerative braking So just how much energy does regenerative braking recover? Well, there’s quite a bit of information floating around about the topic out there, and most of it is highly subjective. That said, the best answer is “up to 20%” of an electric vehicle’s (EV) range. So, as a best case scenario, an EV …

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Permanent link to this article: https://dashboardsymbols.com/2025/06/how-much-energy-does-regenerative-braking-recover/

Regenerative braking returns to brake rotor issues

Regenerative braking I decided I wanted to answer some common questions about regenerative braking and did some Google searches. AI gave the first response (a technology, by the way, that really hurts my business), and turned up some surprises. The largest of these is yet another reference to problems with the regular, or friction, brakes. …

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Permanent link to this article: https://dashboardsymbols.com/2025/06/regenerative-braking-returns-to-brake-rotor-issues/

So I got regenerative braking wrong

Regenerative braking I recall listening to the owner of the last car dealer I worked for explaining regenerative braking in electric and hybrid vehicles beautifully wrong. And I was sure I knew better. Well, his explanation, which included the brakes themselves, is still wrong. But I’ve had it wrong too! I was sure that I’d …

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Permanent link to this article: https://dashboardsymbols.com/2025/06/so-i-got-regenerative-braking-wrong/

Open a Mini with a Dead Key Fob

How to Open a Mini with a Dead Key Fob This page holds all of the emergency open or back-up open procedures needed for Mini vehicles if the battery in the key fob dies or if there are electrical signals interfering with the fob. But first, if you are already inside, click here for help …

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Permanent link to this article: https://dashboardsymbols.com/2025/05/open-a-mini-with-a-dead-key-fob/

Complaint filed with NHTSA

Pitted rotor

NHTSA A few days ago, I alluded to attempting to work with Kia on what I believe should be a warranty issue. I was rebuffed by both a local dealer and the company itself. So today a detailed complaint was filed NHTSA, the National Highway Traffic Safety Administration. I will give you a detailed account …

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Permanent link to this article: https://dashboardsymbols.com/2025/05/complaint-filed-with-nhtsa/

Charge Door Open Failure Indicator

Charge door failure indicator

Charge door This is a Charge Door Open Failure Indicator symbol. It will be seen in the case of a failure of the high voltage battery charge door electric opening. This light, which does resemble a door and an electric plug if it is stared at long enough, should also, fortunately, be accompanied by a …

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Permanent link to this article: https://dashboardsymbols.com/2025/05/charge-door-open-failure-indicator/

Electronic Differential (e-DIFF) Fault Indicator

Electronic differential indicator

Electronic Differential This is an Electronic Differential Fault indicator symbol. Seen as the abbreviation E-DIFF, it indicates a fault in the electronic limited-slip differential, which has an electrically engaged clutch on the differential. Before continuing, is one of these truly your symbol?? If yes, read on below. Otherwise, you can return to our main Manufacturer …

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Permanent link to this article: https://dashboardsymbols.com/2025/05/electronic-differential-e-diff-fault-indicator/