Last post on Mar 15, 2008 at 5:55 AM
You are in the Toyota Sienna
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Toyota Sienna, Auto Repair, Scheduled Maintenance, Van
#2145 of 2209 Re: Problem with engine immobilizer/stalled engine? [toyotafirst]
Aug 16, 2006 (10:51 pm)
Sounds as if your transaxle slipped into "drive" (and mostly likely 1st gear) as you were rolling backward. That would very likely stall the engine and most certainly would add braking to your rearward movement.
Insofar as refusing to "fire" afterward I could see the episode resulting in one very confusing group of ECUs.
You also said something about the "happening" being at about the ABS where you are used to having the ABS do its checking.
I don't think that is a normal action of the ABS. But then the vehicle rolling backwards in neutral with the engine running is clearly outside the design envelope for the firmware specifications of any of the controlling ECUs.
#2147 of 2209 Re: Problem with engine immobilizer/stalled engine? [wwest]
Aug 17, 2006 (10:45 am)
But then the vehicle rolling backwards in neutral with the engine running is clearly outside the design envelope for the firmware specifications of any of the controlling ECUs.
Huh? I do this all the time with several different vehicles with no problems. Or did you mean to say "inside" instead of "outside"?
#2148 of 2209 Re: Problem with engine immobilizer/stalled engine? [wwest]
Aug 17, 2006 (2:13 pm)
Thanks wwest -- that could be a possibility; it would explain why we felt like we hit something rolling backwards as the engine "grabbed". But if it had slipped into drive without me knowing, I don't know that I would have been able to turn the engine over or push it back into the drive -- it seems like the transmission would have been engaged at that point. But I know what you mean -- it seems like it could easily slip into drive if one isn't being careful. So I guess for now I'll hope it doesn't happen again, but I'll pay closer attention to the shift lever and the security light if it does reoccur. I just thought I'd check to see if anyone had encountered a similar problem.
If anyone wonders why we'd do a neutral rollback, it is actually because the reverse on the vehicle (especially when the engine is cold and has high RPM) combined with the grade of our driveway gives us a little too much backwards force. We have small kids in the neighborhood that use our sidewalk and they could be hidden behind the van, so we prefer a more gradual backup in case we need to stop quickly.
#2149 of 2209 Re: Problem with engine immobilizer/stalled engine? [toyotafirst]
Aug 18, 2006 (9:35 pm)
That's why I always BACKED up our steep driveway and into the garage, clear view of the driveway on the approach and on leaving.
#2150 of 2209 Re: knock sound upon acceleration or turning on curve [user777]
Aug 22, 2006 (6:35 am)
But if it were an engine mount wouldn't I feel it in park or neutral?
Also, I do not experience the knock when accelerating from a dead
stop. It happens at between 35 and 45 MPH and in 3rd or 4th
#2151 of 2209 2006 le Sieana- 50 miles driven - humming noise ?
Aug 23, 2006 (4:42 am)
I have noticed humming noise coming from front by driver side when driving the van at 60 mph
The van has 50 miles on it, could it be because of new engine?
When I slow down to 55 or 50 miles the noise goes away. Has anyone experienced this?
#2152 of 2209 Aiming Headlights 2006 Sienna LE
Aug 23, 2006 (6:49 pm)
I recently hit a deer, a glancing blow only, and although I thought there was no damage my son-in-law pointed out that there was a small break inside the light unit that was going to let water in.
So he bought a new left side headlight unit ($357.00) and he installed it.
However I now find that the fog light on the left side doesn't work and worse the new headlight unit does not shine as far up the road as the right side unit, and in fact on dim it shines bright on the highway about 20 feet ahead and is not much different on high beam.
I took it to the dealer and had the 18000 klm checkup and asked him to have someone re-aim the unit. I picked the van up later and the service mgr. was still as harried as he was when I brought the car in. There was nothing on my bill to show that the aiming problem had been addressed.
I asked him about that and he said it was all right. I don't think anyone looked at it at all.
They were very busy and I can appreciate the problem as it is a brand new building and has more employees working.
What should I do? Take it to another dealer. There is another one 40 klms to the west. I really like the Service Mgr. and know he is doing all he can and I don't want to give him anymore problems
#2153 of 2209 Humming noise Siena le 2006
Aug 25, 2006 (4:53 am)
Humming noise I mentioned is seems to be coming from engine compartment, as soon as the engine rpm goes beyond 2500 it like starts.
#2154 of 2209 Humming noise - mystery solved
Aug 25, 2006 (6:13 pm)
Ok I feel so stupid but for other who cares I have to share about my humming noise post.
I took it to the dealer and the mechanic took the test drive with me, as soon as he shifted the gear to “ D” not “4” were I kept and was driving like that causing the rpm to hit 2500 and was not shifting to overdrive gear, hence constant hum.
Thank god for that, now I am worried that I drove 100 miles that at 50/55 miles per hour (city driving) hopefully did not cause any damage to the gears and anything like that.