What is the easiest way to get key talking to computers in a p38dse range rover spins over but won't catch and start was running fine until battery went flat. Battery now fully charged and ok

SOURCE: rover 420 diesel battery keeps going flat

looks like you have something draining the battery (something electrical staying on) disconnect your battery negative terminal and connect a test light between the battery post and the wire clamp if the light comes on you have battery drain (make sure interior light is out when testing) you now need to go through all elctrical systems to trace the reason why ( check boot light goes out first this was a favorite cause)

SOURCE: My P38 Range Rover wont start

Hi Adam,

Bring your vehicle to an auto parts or battery store. Ask if they could perform a 'Load Check' on your battery. This not only checks the voltage, but also the amps, as if it were under the load of turning your engine.

It takes a few seconds and the results are pass or fail. Fail means it's time for a new battery. Pass means we need to look elsewhere.

Comment back the results.

Hope you find this to be very helpful
Mike

SOURCE: battery went flat now wont take key code in

key code lock out usually happens when you have entered the wrong code too many times leaving the battery connected should allow the timer to run down for 30 mins so you can try again, it is cumulative though so the more you get it wrong the longer you have to wait. make sure battery is fully charged first.

Brad Kirby

• 547 Answers
• Posted on Jan 05, 2011

SOURCE: Wont start,until batter is fully

This sounds a lot like a bad alternator. Places like Auto Zone can do a load test on your charging system to determine if you have an issue. They do this test for free.

Muntejaya Ginting

• 10422 Answers
• Posted on Jan 05, 2011

SOURCE: our 19998 toyota avalon was

HI,
Please check and fix your coil ans spark plugs and the wires for malfunction