2007 and 2008 Tundra Owners – Heater Upgrade Available
Toyota recently sent dealers a TSB regarding “reduced cold start heater warm-up in cold conditions.” In English, that means “Tundras that don’t warm up quick enough.” The fix for this problem is really simple – it’s just a software upgrade.
Since the colder months are on their way, now would be a good time to talk to your local dealer if you have a 2007 or 2008 Tundra or a 2008 Sequoia. The TSB number is 0231-10 – here’s some more info on how your dealer will perform this software update:
Step 1: Check the vehicle to see if the vehicle is “cold” on start-up.
Note For Toyota: How do we know if it’s “cold”? Comparison is the obvious answer, but it’s a little surprising Toyota doesn’t share a temperature range the defines what “cold” really means.
Step 2: Check under the hood to see if the software update has already been downloaded – a sticker should have been added under the hood.
Step 3: If there’s no notification sticker under the hood (see graphic), then go ahead and re-flash the ECM (that’s Engine Control Module for all those new to this sort of thing).
Step 4: Once the re-flash is completed and the computer has the new heater calibration settings, affix the sticker described above.
Note For Tundra Owners: Because this heater calibration effects cold-start procedures, it’s federally regulated…and a sticker has to be affixed to meet federal rules. Your tax dollars at work!
Step 5: Road test…if only all technicians did this adequately.
Simple, right? If you own an 07′ or 08′ Tundra or 08′ Sequoia and live in a cold climate, don’t hesitate to ask for this TSB. It’s free under the federal 8 year, 80k mile emissions warranty.
Also, don’t let that sticker mention of a “new ECU” fool you – that’s a one-size-fits-all sticker – no new ECU is required for this TSB.
Filed Under: Maintenance Tips