Starting problem even after charging the batteries and jumping the engine turn over slowly. A second problem arise after jumping the service brake...

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Hi Donald,

Sorry to keep you waiting. 

I suggest that you perform a voltage drop test on the starter main cables. The starter voltage drop should be less than .5V drop total on cranking circuit. This is an important step and is often the cause of a slow cranking complaint. Yet, voltage drop also is a leading cause of click or no-click complaints because almost every vehicle manufacturer uses the heavy positive post, located on the starter solenoid, as a place to pick up the current used to supply the control circuit. 

Since the vehicle is in the shop already, you can ask the mechanic to test te starter. If the start failed to the voltage drop test, then its time to replace the starter.

Let me know if you have further questions. 

Yeah try to inplug the cable from the positive terminal of the battery and see if that will reset the warning break light.

ill monitor this page and please do let me know of any updates.

Any update on this issue Donald? 

Alright. Common problem with the dsahboard brake light on is the brake light swith that is broken. replace that brake lught switch and you should good to go.

Let me know if you have further questions. 

Check also the electric backup to the Hydroboost or Hydromax. The HYDROMAX system has an electric pump to power the HYDROMAX in the event the engine stalls while driving. Without it you would loose power braking if the engine stalled while driving. This electric backup system is checked every time the engine is started. If it does not come on, the warning light and chime will come on shortly. The pump is mounted at the firewall under the hood behind the steering wheel attached to the master cylinder. The pump is powered by a 40 amp plug in relay located right next to the electric motor. Check the relay and maybe it is busted already. 

Let me know if you have further questions. 

Yes it is located under the dashboard and normally near the brake pedal.

Any update on this Donald?

Have you checked all the brake lights are working and its functionality. Have someone look at the back of the vehicle while you are pressing down the brake pedal and see if the brake lights are working when you press and release the pedal. 

Ok. Yeah it would be best to have the vehicle scanned using the scan tool. You can also clear the error of the vehicle using the scan tool and see if that will do the trick.

Let me know the result. 

Fluid levels are ok, right? That would be our last step. Change the relay. the vehicle is still driveable, right? 

Alright ill be monitor this page nad let me know the result after installing the new relay.

Hi Donald,

Any update on this issue?

Alright. Just give us an update here on what happened with the vehicle.

Any update Donald? 

Any update on this, Donald?