Join Date: Dec 2009
Location: Ottawa, Ontario
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Just rolled over 101,000 Km (62,000 miles). I had the following 3 yellow codes on the dash: check engine, VSC and 4WD. (Canada may have different symbols here.)
Took it in to the local Toyota dealer. First thing they asked was if the tires were low. They were previous to the event and I happened to notice and filled them to spec about a week before going to the dealer.
The dealer saw the indicator lights but couldn't find anything wrong. They tried swapping the #1 and #3 coils and found no change. They then cleared the codes (something like a reboot, the way it was described to me). Total cost: $112.
I probably could have done the same thing by disconnecting the battery for a few seconds.
Even after the dealer visit (above) the same 3 dash lights have now returned: check engine, VSC and 4WD. Sometimes the warning lights do not illuminate but most often they do. Any ideas out there such as cleaning the wheel sensors somehow so that I can avoid the possible $800 fix?
Third update and hopefully final ....
Tried replacing the gas cap ($32). My guess... No luck.
Based on diagnostic codes, second ignition coil was replaced 4 days ago and so far all is running properly with no disco dash lights. In Canada, costs were 1 hour for analysis ($120), 0.2 hours ($24) labour to replace the coil and the cost of the coil ($137).