CarChip & DR 600E OBD models has been carefully
designed and tested to comply with OBDII protocols J1850-41.6,
J1850-10.4, ISO9141, KWP2000 (ISO14320), and CAN (ISO 11898),
which are used on most cars and light trucks sold in the USA,
model-year 1996 or later. However, some vehicle models are
not in full compliance with these protocols. In addition,
the computer control systems on a given vehicle may be malfunctioning
or out of spec, as may be the sensors used by these systems.
Our DriveRight 600E OBD model will operate in a similar manner
and most of the notes and comments listed below apply to the
8126OBD model. If you wish to use a CarChip or DR 600E OBD
on Hybrid models we suggest using the DR 8126 VSS which will
operate normally but with out diagnostic functionality.
Before installing CarChip, be sure to review
the list of known exclusions, conflicts, and anomalies below.
Unless specified otherwise, the list applies to all versions
of CarChip, whether they are downloaded via serial port or
This list is current to the best of our knowledge
as of the time of publication. However, given the thousands
of vehicle models produced since 1996, no list can be completely
comprehensive. For more information on OBDII issues and anomalies
in general, we recommend The
Equipment and Tool Institute's website.
While our testing and the experience of thousands
of CarChip users have shown the unit to be safe and reliable,
there is an inherent risk in adding any aftermarket product
that may potentially affect the operation or drivability of
your vehicle. Should you be concerned about the operation
of your vehicle at any time while using CarChip, you should
pull over off the roadway immediately or as soon as it is
safe to do so. Remove CarChip from the OBDII port and consult
a licensed mechanic or automobile service center.
Report any issues or concerns to Davis Technical
Support Department. We are open Monday through Friday, 7:00
a.m. to 5:30 p.m. Pacific Time. We maintain an active database
of the feedback we receive, and your comments can help us
continuously improve the product.
Ford 7.2L CAT 3126 Diesel Engines
CarChip is not supported in these vehicles.
Hybrid Gas/Electric Vehicles
CarChip is not supported in hybrid gas/electric
vehicles, including the hybrid models of the Ford Escape,
Honda Accord, Lexus RX400, Toyota Highlander, Toyota Prius,
and Toyota Sienna.
Tiptronic ® Transmissions
CarChip may cause vehicle hesitation or stuttering
when used in 2003 or earlier model-year vehicles with Tiptronic
transmissions. Developed by Audi and included on many of their
vehicles, a Tiptronic transmission is one in which the driver
may switch from a manual transmission to an automatic transmission
while driving. Please check your vehicle's owner's manual
to see if your vehicle has a Tiptronic transmission. We have
not resolved this issue, and we recommend that you not use
CarChip in vehicles with Tiptronic transmissions.
Incomplete Data Collection
Some drivers of 1997-1998 Fords and Mazdas
have reported that the trip time and selected engine parameters
are recorded by CarChip, but vehicle speed is not.
CarChip Conflicts & Exclusions
Isolated or Intermittent Issues
Some drivers have reported occasional incidences
of the following. If these or any other issues occur while
you are driving, please remove the CarChip immediately or
as soon as it is safe to do so, and contact our Technical
Chevrolet, Dodge, GMC, Pontiac, Toyota
Highlander, or Toyota Celica: May cause some or all of
the dashboard lights to flash occasionally in some models.
1996 Mercedes Benz "C" Class:
May cause the "Check Engine" light to turn on when
the CarChip is inserted.
2002-2004 Chrysler and Dodge: May
cause a momentary loss of engine power in some models.
2002 Mitsubishi Lancer and Evolution:
May cause vehicle instrument gauges to "freeze up."
Using CarChip with Other Aftermarket Products
CarChip may not operate properly or may cause
unexpected vehicle behavior if it is used in conjunction with
other aftermarket products that also use the ODBII port or
communicate with the vehicle's on-board computers. Examples
of these include remote starters, keyless entry systems, and
some alarm systems. If you are using any of these aftermarket
products, we recommend that you remove them from your vehicle
before using CarChip.
Vehicles Manufactured for Sale Outside
the US & Canada
While vehicles manufactured for sale outside
the US and Canada may appear to have an ODBII port, they may
not use the same protocols, and thus may not be compatible
with CarChip. For vehicles manufactured for sale in Europe,
some 1996-1999 vehicles may be compatible; most 2000 and later
vehicles should be compatible. Since requirements vary by
country, vehicles manufactured for sale elsewhere in the world
may or may not be compatible.
Additional Exclusions for the Serial-Port
Version of CarChip
Our original CarChip models (# 8210, 8220,
and 8240), which are downloaded using a serial-port cable,
are not compatible with the new CAN (ISO 11898) protocol,
which is being phased on newer vehicles. Download a chart
CAN (ISO 11898) protocol vehicles. Our current CarChip
models (# 8211, 8221, 8225, 8241, and 8245), which are down-loaded
via a USB cable, are compatible with the CAN protocol.
If you have a vehicle that uses the CAN protocol, you cannot
use a serial-port version of CarChip; you must use a USB-version.
Information for 2006 vehicles is not yet available; check
our website for updates over the coming year.