Frustrating problem with the passenger side mirror: ever since it was replaced it resets itself downward whenever the remote unlock is pushed. Always to the same spot. Nothing else moves [I have but dont use the 2 driver setting memory]
It resets manaually but its annoying. About ready to set it and disconnect it.
Any ideas?
2001 coupe

 

Have you tried to use the memory function to reprogram it to the setting you want? When I first got my C5 if I used my remote it moved everything around for the previous owner settings. I just used the key until I reset it to my settings. It just may be a glitch in the programming that could correct itself with resetting. If not let us know, may be able to figure it out. There is a reason it is doing it.

 

Yep, reprogramed BOTH setings to me as I am the only driver and at 6'8 278# I have to have everything just right to even get in the car.
The Pass mirror is the only thing doing this and only started after it was replaced.

 

Did you reprogram again AFTER you had this issue/mirror replaced? That is what I was trying to suggest, may not have said it very well.

 

PS: Check also to see if you any codes and let us know.

 

Until we can find out a fix, try this (last sentense) from the Owners Manual to stop the Memory function from activating. It says you have to close the door, but it may also work with the door open, don't have my car here at home to try. Let me know if this helps.

When first entering your vehicle, after pressing the
unlock button on your remote keyless entry transmitter
or a MEMORY button, a recall of your settings will
occur when the door is closed and the ignition key is in
the ignition switch. As the memory settings are recalled,
the light above the button will flash until the correct
settings are achieved, then glow for five seconds
when complete.
A memory recall can be stopped by pressing any
memory seat, mirror or steering column position button.

 

I have helped Several people that had MEMORY Setting issues in the past.
Here is something that can cause the memory settings to have a mind of its own:

If your battery is old or weak, when you crank the engine, the battery output voltage drops low out of spec and some or all of the memory functions can reset to off the wall values or to the factory default settings.

Have you noticed the HVAC defaults to deforst or the HUD resets to a different page than you normaly use? Common signs of a weak battery.

Bill

 

Mine was doing the same thing. Very annoying. It ended up being the contact in the driver door switch pod was bent over, missing it's correct location. I just pulled the plug from the switch pod and noticed it. Good luck!

 

Thanks for all the feedback.
Yes, reprogramed after the mirror was replaced. {several times, actually}
Battery is newer and strong - no other symptoms.
Noticed the mirror moves when I hit the remote unlock on the Keychain so Im not even in the car yet to stop it.
Alankb, could you be more specific which contact you are refering to?

 

Like I said, it was probably one in a million.
I carefully pulled the switch cluster up from the driver door panel. It has the window controls and memory buttons and all that. Then unplugged the main harness from under the cluster and noticed one of the male pins was bent over. They are quite long and I see how it could happen if someone wasn't careful.
Best of luck! By the way, it also cured a couple other memory seat problems, but then I put the A4 seats in.

 

Do all the other right door functions work? Window up and down, door locks and unlocks?

PS: When you say you manually reset the mirror, do you mean using the driver door control switch?

One thing you might try is to disconnect the battery for several minutes and then reconnect. There have been some strange issues resolved by doing that reboot of the electronics.

 

All other functions are fine.
Yes, I have to use the control switch every time I get in it. It will go to any position I want and stay there until the next time I unlock it.
Tried the battery trick already.
BTW my code reader is out on loan right now.
Forgot to mention that the mirror always goes down to the limit of travel.
Maybe its the ghost of the donor car?

 

Your car has it's own on board diagnostics. You don't need a reader. Look through the sticky notes to see how to get your codes.

 

Try this, get in the car with the door closed. Adjust the mirror to your desired position. Lock the doors and then unlock them with the FOB and then see if it changes position. Do this with the key in and out of the ignition. Just trying to get some more data points.

It seems like the mirror is getting door unlock voltage to the mirror motor and driving it. Just trying to figure out an explaination in my head at this point. Did you do the mirror install or someone else?

 

better to ask in C5 General.

 

You could have an issue with the Door Control Module.

Here is how to read your codes from the drivers seat!

READING YOUR C5 Engine Diagnostic Trouble Codes (DTC)

This procedure should be carried out any time you experience a problem with your C5. Most inexpensive store bought aftermarket code readers will ONLY read power train DTC’s. Reading the DTC’s with the C5 built in code reader will allow you to read ALL the modules in the vehicle.

The Diagnostic Display Mode is entered with the following procedure:
1) Turn on the ignition but don't start the engine.
2) Press the RESET button to turn off any warning messages. (i.e. door open, trunk open ect)
3) Press and hold the OPTIONS button
4) While holding OPTIONS, press FUEL button four times within a 10 -second period.

Initially, the on-board diagnostics go into an Automatic Mode which will cycle through each module and shows diagnostic codes in a pre-set sequence: PCM - TCS - RTD - BCM - IPC - RADIO - HVAC - LDCM - RDCM - SCM - RFA. All codes will be displayed for each module. ( i.e. PCM = 4 codes) If none are present in a given module, you will see No More Codes on the display.

There are two types of diagnostic codes, Current and History designated with a letter suffix, “C” or “H”. A current code indicates a malfunction is present in the module displaying data. A history code indicates a problem existed sometime in the last 40 or 50 ignition cycles. When not accompanied by a current code of the same number, it's potential evidence of a previous problem, now resolved, that was not removed by clearing the codes. More likely it's an indication of an intermittent malfunction.

Intermittent codes are the most challenging of the diagnostics. An intermittent code may have happened once, may have happened more than once but is inconsistent or may be happening on a regular basis but not at the time the codes are displayed. History codes can also be caused by a current malfunction in a system that is not operating at the time codes are displayed. An example is the rear window defogger which doesn't operate until the Body Control Module detects engine rpm. For history codes set by a module that does not operate with the key on and engine off, a special diagnostic tool called a Scan Tester is necessary to properly diagnose the malfunction.

Once the system has displayed all modules, it goes into the manual mode which allows selection of each module using combinations of Driver Information Center buttons. Manual mode can also be entered during the automatic sequence by pressing any button except E/M. Once the display shows Manual Diagnostics, select a module by pressing the OPTIONS button to go forward or the TRIP button to go back. Once a module is selected, a code is displayed, and if more than one are present; press GAGES to go forward or FUEL to go back.
To exit the diagnostic mode at any time, press E/M. If you want to erase codes in a given module, press RESET To reset the codes once in manual mode, press and hold RESET until it displays NO CODES Press OPTIONS to go to the next module. Repeat the steps until you have reset the codes in all the computer modules.
NOTE!! Only reset the codes IF you want to - it is NOT necessary to do this. Clearing a code does not repair a problem. You are simply erasing the evidence of it in the module's memory. If you clear the code/s, and extinguish the Check Engine Light, your emissions status ready will NOT allow you to pass an emissions test until you have completed the required driving cycles. There are a few body module DTC’s that if set will prevent the module from operating properly. Once the DTC is cleared, the module will return to full function. This is not true for power train DTCs.

If you have never read and cleared your codes, there will probably be a lot of old history DTCs. It is recommended that you clear your codes and see if any come back during a driving cycle. Those are the ones that you need to concentrate on diagnosing.

Once you have the codes, the next question is: What to do with the information?
First, consult the factory service manual. Any serious C5 Do-It-Yourself owner should invest in the Corvette Service Manual of the appropriate model year. The Service Manual is really a requirement if you want to understand and work on your C5.

NOTE and a WARNING. You can read the DTCs while the engine is running. I pull mine up all the time while driving.
WARNING. Don’t become distracted while reading DTCs while your driving and cause an accident!!!!! Use common sense and drive safe.

These are some very good C5 Diagnostic Trouble Code (DTC) explanation web sites!!! They also explain how to read the DTCs

Here are some very good sites that explain what DTC mean:

http://www.gearchatter.com/viewtopic11755.php

http://www.obd-codes.com/trouble_cod...d-ii-codes.php

Make sure to include the H or C suffix when you post your DTCs!!

NOTE!!! Start the car and let it idle. Then take it for a drive and cause the problem to occur. When you return home pull the codes BEFORE you shut off the engine.


Do NOT discount the codes with the H following them. They can provide an audit trail for issues going on with the car. They ARE important in diagnosing problems.

Post ALL the codes that you pull with the engine running..........

Some codes go away WITHOUT setting an H code when you shut the engine off. I suspect you will have several codes that will show C or HC that do NOT show when the engine is turned off.

 

Great info as usual Bill.

I would like to also stress that even though the codes can be pulled, don't pull them while driving. Or just don't pull them while driving around me..

 

If you are the only person that drives the car you could just unplug the mirror from inside the door panel once you set it. I don't know if this would effect other memory functions though.

 

Putzed with it again today. Disconected batt, waited 10 min, reconected and reset both drivers 1 and 2 after moving everything around, then back to original positions and reset again. So far its working properly. Must have been some programming glitch. I will repost if it starts again.
Thanks for the help.
Esp thanks for the code reading/DIC procedural. Did not know that, and will put it to good use.

 

Sometimes just clearing the DTCs out of a module will cause it to start working correctly. The HVAC module is notorious for that. Since you disconnected the battery, re read your DTCs and see if you have any random DTCs. If so, clear them and monitor them every so often. Sometimes, it will show you a trend and you can catch a problem before it gets bad.

Bill