Hey I got an 00 elantra that goes in reverse normally from drive to
reverse, but when I start it and go into reverse directly.. it doesn't
move at all. Sometimes it goes from park to reverse normally but
sometimes it doesnt.. it's an intermittent problem. The transmission
was replaced and the TCM was replaced as well. Still doing the same
thing before it was replaced. Any help with this issue is appreciated.
I don't know about you car, buy my Sonata has a safety interlock that won't
allow it to go into reverse if the car is moving forward, no matter how
slow. There may be some sort of electronic device that has to be properly
positioned and moving from P to R does not do it, but N to R does. Find
out what linkage or switches are involved. I'd start with hmaservice.com
I think you guys might be misunderstanding me to what the problem I'm
explaining. Lets say I go to my car, start it up and going to
reverse(it does not move). Then when I'm driving and I want to
parallel park, so I switch to reverse after it was already in D for a
period of time(it works). So I don't think a safety interlock switch
can make a difference. Going from P to R is the problem, going from D
to R has no problem. That is the only situation that's giving me
The reverse lights come on as I shift to R and I'm watching the shift
linkage go into reverse so there's no way that the linkage could be
failing. I will check with the safety interlock if you think it could
be it, but I highly doubt it is though.
What's so funny? How can you determine a shift linkage is broken when
I can see it shift into each and every gear? If you don't know what
you're talking about just stay out of the thread please. Your
ignorance is not needed here. I checked it today, has nothing to do
with shift linkage nor your silly safety interlock switch. It's more
of a wire harness issue as I saw it started smoking up the TCM. Don't
try to be a tech if you're not one. Stick with going to garages and
asking for service.
At least once a week I hear "it can't be this because" and you can figure
No, you didn't see it shift into every gear. You saw some linkage move and
an indicator on the dash move. Unless you opened the tranny, you did not
see it move into gear.
Without looking at your particular setup I did now know what it was, but I
knew it was not inside the transmission. There are many other sources of
troubles, such as relays, solenoids, switches, safety interlocks, etc. I
was trying to guide you to look in that direction and I guess you did and
found a problem.
Thanks for the laugh.
I am not familiar with the Elantra in particular, but I am assuming it
has a mechanical shift linkage. It is is all electronic, then what I am
about to write does not apply and can be ignored.
When you say you can see it shift into each gear. Are you looking at
the shift arm on the transaxle itself and verifying that it is moving?
I think Ed's point is that watching the gear indicator inside of the car
does NOT verify that the linkage is correct. If the linage is adjusted
improperly on many cars you can have indications in the car that all is
well, but the transmission linkage is not moving correctly. I don't
know if this is the case with the Elantra in particular, but it does
apply to many cars with automatic transmissions.
I am not sure what you mean by "smoking up the TCM", but if you mean
that smoke was coming out of the module, then you have a serious problem
that needs to be addressed by a qualified mechanic.
Smoke from the transmission control module at any time indicates a
serious problem, but I doubt that was the cause of the vehicle not
moving when reverse is selected moving from the park position.
Nonetheless, it'll be important to determine whether the cause of this
smoking was internal to the TCM or external. TCMs are not cheap, and
it wouldn't pay to replace one only to find out it's going to do the
I'd suspect that the problem with not moving in reverse is related to
the cable attachment to the shifter or transmission. My reasoning is
that this problem only occurs when moving the shifter rearward, not
forward. In one case, you're placing the cable under tension, while
in the other you're placing it in compression. You should check to
make sure the cable is attached properly and securely to the shifter
(where it clips onto the shifter base as well as attaches to the lever
itself) and the transmission (again where the cable housing is clipped
onto a bracket and bolted onto the transmission as well as where the
cable attaches to the lever on top of the transmission).
In addition, it's possible that the shift lever on the transmission is
not adjusted properly. The fact that the reverse lamps come on is a
good indicator that the range switch is properly calibrated to the
cable, but indicates nothing regarding the adjustment of the selector
lever attachment to the cable. www.hmaservice.com has at least one
very nice technical service bulletin regarding the adjustment of the
cable, lever, and range switch.
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