My car was running fine, it has just been serviced new brakes and a system flush. Yesterday after coming out of the grocery store I started the car and the steering wheel wouldn't turn and the voltage light came on?

I suggest you see the dealer on this and have the system scanned.

Yes this is electrical. Start by checking the fuses.

check the adjustment for the switch / sensor or check for shorting wires in the circuit.

run a fault code reader to reset the abs and trac lights as the trac light uses the same sensor as the abs.. IF the pedal is still soft then there is still air in the brake system. You may have to crack the lines at the master cylinder first and bleed there first then start at the longest line and work back to the shortest

While it may be an eletrical issue developing, it may also be internal to the hydraulics of the brake system. If the system was recently flushed, I would look at the wheel sensors first- make sure thery have not picked up debris and sensors are snugly mounted and wiring in good shape.

If the brake system has not been flushed with new fluid, the system should get flushed out next time brakes are serviced. This may mean an expensive repair, but it depands on how comfortable and experienced you are without ABS at all.

If the ABS fails- all that happens is you lose the brake pressure modulation. Fancy word for braking yes- pulsing of the pedal by the system- no. The wheels or a single wheel "might" lock up while hard braking possibly changing handling dynamics of the vehicle..

IF IT SEAMS TO RUN FINE YOU SHOULD BE OK TO DRIVE. THANKS MOTOR62500

Code P0155, 1155, will get those code's with vacuum leaks, I have seen that many times here at my repair shop, many times customers come in, after they have done a tune-up, as you have, and same problem, check for vacuum leaks, more so on top of engine to the back, by fire wall.

Sounds like you have been talking to a very aggressive sales person!! Assuming the car is running halfway ok, & without seeing the condition of anything the most critical in terms of breakdown are:

• belts
• brakes
• battery hold down
• cap, rotor, wires, spark plug
• trans, brake & fuel flush(by the way..no where in your maintenance manual does your car call for flushes of any kind!!) Go by what it says in your book
  

could be the fuel pump...

The battery can read 12 or so in volts, but may not have the amps to run it, or the cca to start it, it also has to maintain a certian voltage to run the injectors and coils.

do a check on the battery, any parts store can do this.

sounds like something is shorting the system draning the battery, but it could be the battery itself