Common Issues
• Set the switches. Turn the vehicle on. Then insert
the ProCal. Always.
• It does not matter if you remove the ProCal then
turn the vehicle off, or turn the vehicle off then
remove the ProCal.
• To determine Up or Down, hold the module in your
hand looking at the switches, with the connector
by your thumb, this is “UP”.
• If you feel the ProCal “isn’t doing anything”, please
rst read this:
○ If the ProCal honks the horn twice on a
programming event, it IS working.
○ If you get no honk, check for the diagnostic
light ashing on the dash.
○ If there is no ashing indicator error code,
and no honk, contact AEV.
• The ProCal is honking, but you aren’t seeing
the effect, read the section in this guide for the
function. In the case of Tire Size, use a GPS to
verify and adjust as needed. In the case of TPMS,
sometimes you just need to drive the vehicle a bit.
Beware of knockoffs and scams
• As with many popular electronics, there may be
knockoff versions of the ProCal. Always buy from
actual AEV Dealers. Be cautious of any sales below
MSRP, AEV runs an aggressive MAP policy so every
dealer should be the same price. Be aware an
emerging technique for knockoff manufactures to
use is to sell at the same price, further removing
the customer’s ability to spot a knockoff or clone.
Contact AEV if you are unsure about a dealer.
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