Software Update

[precopster]

If TCM somehow lost adaptations then a harsh 1-2 shift can result. I agree with sw doing nothing to solve this one.

A forced drive cycle Adaptation however may help. This is done by a dealer on a specific drive cycle or you can DIY it if you have a specific (updated) TCM firmware and a Vida/Dice.

If the indie wants a TCM update because the firmware is so old you can't enter into an adaptation cycle then you WILL need an update.

[phils94850]

thats the issues I'm having with mine is shift flares between 1 and 2 shift after it warms up. The fluid is pretty dark so I'm planning on drain and refill, then add some seafoam transtune, then drain and refill again. I also plan on getting the sw update and doing the adaptive procedure. I'm hoping it will solve the issue.

[joo070772]

Thank you All,

I will go to the Smyth Volvo then will update it again.

Regards

Joel J Benedict Lee.

[Thatence]

For those model years, I'd be a little careful about paying someone simply to “update all the software.” These aren't like modern cars where you routinely download a bunch of ECU updates yourself.

The first thing I'd ask the shop is exactly which control module/software update they believe is required, and why. If the cars are running normally and there isn't a specific Volvo service bulletin or software issue being addressed, I'd want that explained before spending $250–300 per car.

Also, keep in mind that the dealer/independent shop needs the appropriate Volvo diagnostic equipment and access to Volvo's software system for legitimate module programming. A cheap OBD cable or generic scanner generally isn't equivalent to an actual software download/programming session.