dizziness while driving... is it my alignment?
since all the work was done and driving the car daily, i have experienced a strange thing where i feel a little dizzy and almost nauseous while driving short/long distances. after i reach my destination, it takes a few minutes to an hour for me to feel better and then i'm fine as long as i don't drive again. i'm not sure what's going on since i can't seem to feel any distinct vibrations or shaking while driving other than me having this feeling something isn't smooth. i have attached a picture of the alignment results they gave me. i asked them to adjust the toe so that my tire wear isn't so much towards the inner part of the tires. i have 19 inch wheels with no spacers and stock suspension. i knew i may sacrifice some handling but i don't track the car and mostly use it for driving around town and wanted to extend the life of my tires if possible.
after experiencing dizziness every day since getting my car back, i will be taking the car in on monday to have them keep it for a few days and see if they notice anything.
some of my random thoughts
1. could it be the o2 extenders that were installed? they were installed on the secondary set of o2 sensors. i'm not running cats and currently my tune has the secondary sensors turned off to avoid me having to see the cel light all the time. i was hoping the extenders would help me get the o2 readiness status monitors to pass when i turn the sensors back on. but for now those sensors are turned off so i didn't think they could cause any issues.
2. could it be the alignment? i'm not sure which is why i posted the alignment chart
3. could it be the link stabilizers? are these so different from oem that i can feel a difference? or could they have been installed incorrectly? or are they just bad/defective?
4. the shop also cleaned my k&n air filters and re-oiled them. am i feeling some slight difference in power delivery like if the filters were over oiled.
5. the shop discovered that one of my wheel lug bolts were missing on my passenger rear wheel. the wheel lock apparently broke off. so i brought a bolt to replace it. i just won't have a lock on that wheel. not sure if anything could have happened here but just putting down everything i can think of.
6. my car was so dirty that someone complimented my car due to the awesome shade of gray and asked what color it was. i told him it was white. so i decided to have my car washed as well. am i experiencing a new lightness to my car since all the dirt and grime was removed from my car?
Without knowing more of your history and presentation, new onset "dizziness" (this can be a very nebulous term and requires a more rigorous definition in a clinical setting to do you 100% justice) does not typically occur in this setting, unless fumes are venting into cabin from some leak. would advise checking for said leak - exhaust, fuel, etc.
hopefully you haven't noticed any other symptoms, but after checking for any fume leaks into cabin, etc would still err on the side of caution and get checked out by a medical professional to ensure this isn't a harbinger of something more serious.
if no answers from a general practitioner, recommend neurologist/vestibular specialist
Last edited by MBNRG; Sep 9, 2018 at 01:55 PM.
i just went to the garage to gather a few things to take with me tomorrow and i noticed that the wheel lock bolt on the driver side rear wheel is now missing. it was there when i picked up the car last time. this is crazy. i'm going to have to replace the rest since i can't trust them now.
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some other thoughts and notes i had
my front tires are new. my rear tires will need to be replaced soon. the outer half is fine but the inner part is close to the wear bars. so my next thing to do is replace the rear tires. another thought i had after seeing the rear tire wear was that maybe i was noticing something with the new alignment matched up with the rear tire wear. i really don't know. at one point i thought it was the alignment + tire wear + all the rain that has been falling for the last 2 weeks. but i get dizzy even while driving when it's dry like today.
so any new thoughts from fellow mbworld members?
How did shop test for exhaust leaks?
The C63 has a relatively large V8 compared to most other vehicles, and as such, would exhaust higher volume of gases in a given amount of time.
As others have astutely noted, Carbon Monoxide is the major concern here. May be prudent to test for this by getting a CO detector that can measure in < 10PPM (more sensitive than typical run of the mill detectors) :
https://tinyurl.com/y7yscrq6
Place detector near you in the driver's side of the cabin, all windows rolled up, and test levels on multiple drives. (May want to have a driver other than you for these runs)
This will lay this question to rest once and for all.
Different people = different physiologies, and hence, may have different responses to the same level of CO. Add a possible underlying condition/co-morbidity, and this can increase one's sensitivity to CO.
Last edited by MBNRG; Sep 15, 2018 at 07:46 PM.

This was a good move. Mold and other irritants possibly trapped in filter could potentially elicit similar symptoms. But yours persist despite this.
If CO measurements come back OK, perhaps search deeper in the AC/ventilation, or under certain carpeting (if previous water damage) for possible sources?











