I have a volvo 940 and I disconnected the battery. When I hooked the battery back up, the car would not start. There is a red light near the steering wheel that is flashing. What does this light mean and how can I get my car running?

U MUST LOCK ALL DOORS and unlock with key place key in ignition switch turn on but do not start wait three minutes or until security light goes off then start

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I have seen this work in the past. When you hook up the battery, the alarm sound, correct? If you momentarily disconnect and reconnect, his should act as a reset.the connection will spark, but your safe.i have seen this work on several different electrical issues on a 740 volvo, my favorite volvo yet. good luck

It looks easy for the 940 but I am not sure about the 940 turbo, as maybe some of the turbo parts are in the way. I'm not sure about that, since there is no documentation on the turbo model vs. the 940 standard model. If you can follow the following instructions, then I would give it a whirl.

REMOVAL & INSTALLATION - 1993 Volvo 940

1. Disconnect the negative battery cable at the battery.
2. Disconnect the leads from the starter motor.
3. Remove the starter motor retaining bolts.
4. Remove the starter motor from the vehicle. To install:
   
5. Position the starter motor to the flywheel housing.
6. Apply locking compound to the bolt threads and install the retaining bolts finger-tight.
7. Tighten the bolts to approximately 25 ft. lbs. (34 Nm).
8. Connect the starter motor leads and the negative battery cable. Fig. 1: Unfasten the nut retaining the starter cables . . .
   Fig. 2: . . . and remove the starter cables
   Fig. 3: Unfasten the starter retaining bolts . . .
   Fig. 4: . . . and remove the starter from the engine
   

1994 Volvo 940 Car Audio Wire Diagram
Car Radio Battery Constant 12v+ Wire: Yellow
Car Radio Accessory Switched 12v+ Wire: Red
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Light Orange
Car Stereo Dimmer Wire: N/A
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: 5 1/4′
Car Audio Front Speakers Location: Doors
Left Front Speaker Positive Wire (+): Blue/Yellow
Left Front Speaker Negative Wire (-): White
Right Front Speaker Positive Wire (+): Gray/White
Right Front Speaker Negative Wire (-): Gray
Car Audio Rear Speakers Size: 6′ x 9′
Car Audio Rear Speakers Location: Rear Deck
Left Rear Speaker Positive Wire (+): Yellow/Brown
Left Rear Speaker Negative Wire (-): Yellow/Green
Right Rear Speaker Positive Wire (+): Green/Brown
Right Rear Speaker Negative Wire (-): Green

Hope helps (remember rated this) TY for use Fixya.

the BOO switch, (Brake On Off) located on or near the brake pedal

check the wires near the locations of all work performed. a wire maybe disconnected

Replace your fuel pump relay.

check the large relay in the fuse box and push it down it works a number things

They are found under the car, near left front wheel.

Hi!
Start by charging the battery completely. Then, start your car and while running, remove the NEGATIVE battery cable from the battery. If the car dies, your alternator is bad. If it keeps running, reinstall the battery cable and turn the car off. Check for something that's on that would drain your battery like a light in the trunk, glove box, etc. that wont shut off.