Hidden code reader? Really?

[albertj]

I came across this web site while looking for something else, claiming to instruct on accessing a "hidden" DTC reader in certain model Volvos including the XC70. Before posting this I tried searching on this site for the info -- seemed like if it was true somebody would have posted. Wondering if any of you knew if there's any truth to this?

http://mr-fix.info/volvo-hidden-menu-dtc-check/

Apparently it's posted by a fellow in Poland. I assume he's accumulating revenue from the advertising.

One obvious issue - without the VIDA or a printed manual to help interpret/guide repair diagnostics, just having the codes does not help all that much... anyway...

In general for the XC70 it says:

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Warning!
Do this at your own risk!
We are not responsible for any loss or damage.
Volvo hidden menu – procedure
Turn ignition to II position.
Press and hold READ button on the left stalk.
Press twice rear fog lights button. You should see “CHECKING DTCS” message on the DIM.
Release the READ button.
After few seconds you should see “DTCS IN VEHICLE” message.
Use READ button to browse through the hidden menu.
Modules will be listed with information about present DTCS:
DTC SET – errors found in module
CHECKING – waiting for information from module
READY – no errors
Volvo hidden menu modules list (all models)
ABS – Anti-Lock Brake System
ADM – Additive Dosing Module
AEM – Accesory Electronic Module
AFM – AM/FM Tuner Module
ATM – Antenna Module
AUD – Audio Module
AUM – Audio Module
BCM – Brake Control Module
CCM – Climate Control Module
CEM – Central Electronic Module
CPM – Combustion Preheater Module
DDM – Driver Door Module
DEM – Differential Electronic Module
DIM – Driver Information Module
ECM – Engine Control Module
EPS – Electrical Power Steering Module
ETM – Electronic Throttle Module
IAM – Integrated Audio Module
ICM – Information Control Module
KVM – Keyless Vehicle Module
LPG – LPG Module
LSM – Light Swith Module
MMM – Multimedia Module
MPM – Media Player Module
PAM – Parking Assistance Module
PDM – Passenger Door Module
PHM – Phone Module
PSL – Power Seat Left
PSR – Power Seat Right
REM – Rear Electronics Module
RTI – Road Traffic Information Module
SAS – Steering Wheel Angle Sensor
SHM – Seat Heating Module
SRM – Sunroof Module
SRS – Supplemental Restraint System
SUB – Subwoofer Module
SUM – Suspension Module
SWM – Steering Wheel Module
TCM – TransmissionMessage Channel Module
TMC – Traffic Message Channel Module
TRM – Trailer Module
UEM – Upper Electronic Module
WMM – Wiper Motor Module
This article was tagged diagnostic trouble codes (DTC), hidden menu, maintenance and repair, tips & tricks.
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[Xfingers]

I think there's a youtube video showing how to do this. If it's impt., I'll try to find it and post the link. Anyway, I followed the procedure and was able to scroll thru all the modules and most of them indicated an error was found. No codes were provided (P0***) so it wasn't much help. I have a cheap OBDII reader that works for my 2002 that I use to read/clear codes.

[JRL]

There are no "modules" for some that are on that list

[vtl]

If I remember correctly, it only says if this or that module has active errors, and that's it. Useless.

[goldxc70]

I've been aware of that "feature" for years but never found it of much use.

[albertj]

Thanks everyone. Let's close this thread, so to speak.