Change Battery

Replacing the battery in the Murcielago takes about 30 minutes.

1. Loosen lug bolts of left rear wheel.
2. Jack up rear of car and place jack stands under the car.
3. Remove left rear wheel.
4. Remove the 10mm bolts and phillips head screws holding the front front portion of the fender liner in.
5. Remove the front portion of the fender liner, it will catch on the body line, so carefully bend it to slide out. 
6. Remove the 8mm hex bolt holding the battery hold down bracket. 
7. Disconnect the battery terminals with 10mm socket.
8. Slide the battery out of the battery tray. 
9. Install new battery and do the opposite of steps 6-8.
10. Line up the fender liner, lightly bend/flex the panel to get it to slide in through the body line. Then put the mounting bolts and screws in, do not fully tighten the bolts until all of them are installed.
11. Install left rear wheel with lug bolts, lower car to ground, tighten left rear wheel lug bolts. 

The front section of fender liner to be removed.

Fender liner removed

Remove battery hold down bracket 

Battery Removed. 


The Lambo started acting up; I would hit nose lift and while the pump was on, the dash lights would dim and the car would sometimes stall. Finally, the car almost didn't start. It was time for a new battery. 

I went with the largest CCA battery that would match the Lambo's battery from Die Hard, it's part number 50090. The Die Hard weighs 20lbs more than the Deka battery that was in the car, but it puts out more power. It's a trade off that I'm willing to sacrifice weight for. 

Here is the information on the Die Hard and Deka batteries used in my car:

Deka 734MF battery that was in my car for the past two years. 
Note: the current version of this battery is 850CCA, up from 800CCA.

Die Hard 50090 next to the Deka. It's slightly larger in size and 20lbs heavier. 

Die Hard Gold 33147 has the same dimensions and weight as the Deka, but a much lower CCA. 

After driving the car, the power is smooth, nose lift has never gone up so quickly, and . . . my Koni shock warning light is gone!!! Weak batteries can reek havoc on a car.