2014 tundra Hard start or long crank time - TSB PCM update

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This tundra has been acting up for a while and the customer was unable to identify the issue. The customer had replaced the coolant temp sensor and Fuel pump but the issue remains. The problem is a long crank time or hard start after the truck has been sitting for a while and especially when starting in the morning.

What we find is an calculation error for the fuel alcohol content. There are multiple service bulletins and multiple PCM software updates for this concern. One of the TSBs even require a new fuel pump to be installed.
T-SB-0058-13
T-SB-0166-19

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This problem should be a class action suit everyone has this problem in winter

kevinbass

the more i learn the more i love my 1994 ram 2500 gasburner

DependableAutoTruck

Excellent video. Great step by step. Have to do one on Monday. 2019 Tundra, same issue.

billyfox

In the Values it shows "Current Fuel Type : Ethanol" - shouldn´t that say "Gasoline" ? Or does this change after the Learn is complete ?

chrisi

Can this also cause you to get code p0308 i already changed spark plugs and coil and still get traction control off and check engine

JoseA

do you have any problems with the think diag II connecting to blue tooth i have google pixel 7 pro and always have to try to connect a second time if i haven't used it in a couple days if its the same day will connect no problems but i really like it just wish it would work on a tablet

DependableAutoTruck

My Tundra 2017 started to weaken especially during the morning at its first start. Does anyone knows how much does it cost a recalibration performed by the dealer cost?

ricardoramos

I have a 2015 Tundra that has this problem on cold start. Runs great any other time. Thinking I need to start with the PCM update first, only thing needed is the techstream?

brettnopper

I heard you mention a snap on scanner tool at the beginning of the video. Have you tried to reset the density with the snap on tool or do you use tech steam every time?

Redstang

I just did mine the other day you do not need a new fuel pump. All you have to do is reset your alcohol density if it’s a flex fuel which it is or else it wouldn’t be having this problem it’s really simple. I bought the computer reader off of Amazon for 300 and something bucks Reset it and it cranks up and runs like it did the first day I bought it 2015 flex fuel.

fredares

I had my fuel pump replaced and ecu reflashed by toyota under warranty on my 2017. The problem occurred AGAIN 3 weeks later. I was able to start it after many tries and drove it straight back to the dealership. I'm hoping this won't keep occurring.

jamalwatson

Man i have the same issue with my 2013 tundra 😢
Where are you located im really tired of it i just want to know what’s going on with my truck

salemmajed

I had this TSB done on my 2017 tundra. They replaced the fuel pump and calibrated the ECM. Two years later it started doing it again. I got toyota involved because they wanted to charge me for the whole thing which was around 1300. They dropped the price I paid to have the pump and ECM recalibrated.. got the truck back and the fault is back again all within 72 hours. I love toyotas. What the hell?! Now they want the truck back to start a case and have their senior techs work on it.

rickytarusan

Thanks so much for the video. Owner of a 2016 Sequoia Flex Fuel with a hard start (alternator and battery are good). so guessing this MAY be the issue. It isn’t throwing any CELs but maybe there are codes in there I need to get read.

Do you think that the fuel pump change is a requirement? It was done in that trucks instance (just before your workflow) but feels like an odd swap if it’s an ECU reFLASH issue. And people are saying it is coming back anyway months later with the change and flash (just reading other comments).

danc

I’ve got a 2012 Flex fuel Sequoia with the same issue. I visited the dealer and asked in the service department if they had run into this with flex fuel Sequoias. He said they did and that only by running through diagnostics could they determine the exact problem. This made sense to me. He said usually it entailed dropping the fuel tank and replacing the fuel pump and then reflashing the ECM. When I asked about a ballpark estimate for the cost of the repair, he again said without diagnostics it would be a guesstimate, but that this procedure would cost from $2200-2500 to perform by Toyota service. I’ve been living with this for 2 years now, and trying to justify the expense over just living with the problem. In your opinion, what would you do and what suggestions could you help me with? I’ve been looking for someone that went into detail explaining the problem and the procedure and ran into your you tube video here. It is an excellent video, well made, and explains what I suspect is going on with my Sequoia. Thank you so much!

MountainrunnerTn