Santa Fe auto goes into reverse but no drive
Discussion
Here's the story:
2008 Hyundai Santa Fe 2.2CRDI Auto
Recently accidentally ran the battery flat by leaving the interior light on. Re-charged and away it went, but then the battery light started flickering on and off. Stuck a multi-meter on the battery and it held a full charge, but only showing 11v with the engine running so suspected alternator. Measured from the alternator live to battery ground, and alternator live to grounded on the alternator body and got the same 11v to rule out bad earthing.
Put the car in with the mechanic on Monday for a new drive belt and alternator. Fitted no problem, they moved the car successfully from the workshop and put the battery on charge. Then when they went to move it later on the car will only select reverse and no forward gears. If you put it in drive, the engine just revs.
It could be purely coincidental that something's given up at the same time the alternator was changed, but I'm wondering if it could be related.
Mechanic suspects gearbox failure and thinks it wouldn't be cost effective to investigate any further and basically the car's fit for scrap.
I'm keen to explore other things before writing it off completely.
Help?
2008 Hyundai Santa Fe 2.2CRDI Auto
Recently accidentally ran the battery flat by leaving the interior light on. Re-charged and away it went, but then the battery light started flickering on and off. Stuck a multi-meter on the battery and it held a full charge, but only showing 11v with the engine running so suspected alternator. Measured from the alternator live to battery ground, and alternator live to grounded on the alternator body and got the same 11v to rule out bad earthing.
Put the car in with the mechanic on Monday for a new drive belt and alternator. Fitted no problem, they moved the car successfully from the workshop and put the battery on charge. Then when they went to move it later on the car will only select reverse and no forward gears. If you put it in drive, the engine just revs.
It could be purely coincidental that something's given up at the same time the alternator was changed, but I'm wondering if it could be related.
Mechanic suspects gearbox failure and thinks it wouldn't be cost effective to investigate any further and basically the car's fit for scrap.
I'm keen to explore other things before writing it off completely.
Help?
Low battery charges can cause all sorts of issues with modern cars. In order to eliminate a faulty battery my first step would be to replace the battery with a known good one & see what happens.
Are the gears on your autobox selected mechanically (perhaps via a cable operating a bell crank) or by an electrically operated switchgear?
Can any other forward gears be selected?
Whilst I have no experience of the Santa Fe boxes the ZF autoboxes on the P38 Range Rovers (& other LR vehicles) select electronically by what's referred to as an 'xyz switch' & these can suffer problems.
So it might be the case that whilst the gearlever moves to 'D' there is no electrical signal reaching the operating mechanism or the mechanism is faulty.
Are the gears on your autobox selected mechanically (perhaps via a cable operating a bell crank) or by an electrically operated switchgear?
Can any other forward gears be selected?
Whilst I have no experience of the Santa Fe boxes the ZF autoboxes on the P38 Range Rovers (& other LR vehicles) select electronically by what's referred to as an 'xyz switch' & these can suffer problems.
So it might be the case that whilst the gearlever moves to 'D' there is no electrical signal reaching the operating mechanism or the mechanism is faulty.
Edited by paintman on Wednesday 5th February 14:29
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