Radio will not turn on --second day of ownership..had " battery in save mode? " message this am & none of the dash/signal lights would work ..? then the dash & heater control lights and signals worked intermitently --then they would not ..now the heat works but no radio ..? can you help

DId you pull the radio out of the dash and check for battery voltage at the connectors pluged into the back of the radio ? Check battery voltage with a DVOM - digital volt ohmmeter . There are things here you probably will not have a clue about .

Radio Circuit Operation
Radio Power
The radio is supplied power by a fused B+ circuit. The radio does not use a discrete ignition feed circuit for power moding. The power mode master (PMM) provides the system power mode to the radio via serial data messages. The PMM determines the system power mode by processing power mode information from ignition switch inputs. Serial data power modes supported by the radio are OFF, ACCESSORY, RUN, and CRANK REQUEST. The power mode master is the BCM - body control module .

Radio Data Link Communication
The radio communicates with other modules via serial data.


The first thing to do would be hook up a factory or someother type professional scan tool an check for DTC'S - diagnostic trouble codes

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generally is an battery problem low voltage , check the battery

I would check your ground from the battery to the frame/engine and also the positive battery lead where it connects to the starter/relay

you put the light in wrong or wrong bulb. take a look again. go to a parts store to have codes checked for free

find the pin from bmw/becker or whatever unit you are running.
this is to prevent theft of auto systems.

The security light is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM. (Theft Deterrent Module) The TDM is what tells your computer that the correct key is being used and that it is "OK" to allow the vehicle to start and run. These 3 parts must be in CONSTANT communication. If the key is in the ignition, then these parts are sending important signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, (normally due to a failing/broken part) the car goes into antitheft mode. The car misinterperates this and thinks its being stolen or hotwired because it is NOT getting that signal from YOUR specific key. There is where the security light turns on and shuts down your vehicle. So basically, if that light is on, your system has some sort of failing part. This can start as an intermittent "no start", to your vehicle not running for days at a time, to the vehicle NEVER starting again. The problem is electrical and computer based, so don't count on an easy reset button, or the problem fixing itself. The hard part is isolating which part is the problem. You can spend a thousand dollars through a mechanic very easily. I have had great luck with bypassing the entire system. This way the problem will never return. It actually CAN'T ever return because it is eliminated. This can also be done yourself at a much cheaper cost. Read through this link very carefully. You'll find alot of information and pictures, along with ways to help you fix this.



http://vatspasslockpasskeysecurityhelp.yolasite.com/

On my 95 Chevy 1500, the 4way flasher is located in fuse panel on firewall driver side under dash. To get to the turn signal flasher, remove the bottom dash panel and the entire ash tray compartment. I also removed the cup holder unit to allow light. The turn signal flasher was located just below the the radio and AC area. Mine was wrapped in tape from the factory, but if you turn the turn signals on you will feel the vibration and be able to locate it from the sound.

Did you ever get a solution to this problem, I have the same issue

check fuses for dash lights if you use a12 volt tester turn on runnig lights and check dash lite fuse for power the radio maybe on same curcit/