Volkswagen Golf Variant / Jetta. Manual - part 606

 

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Volkswagen Golf Variant / Jetta. Manual - part 606

 

 

in engine compartment or interior.

– Close all doors.

Note

The temperature of the battery -A- must be at least 10 °C.

For additional information, refer to the ⇒  operating manual of

the Midtronics -MCR340V- tester.

Carry out following procedures:

WARNING

Do not test or charge batteries -A- whose magic eye is “col‐

ourless/light yellow”. Do not slave/jump start the vehicle!
Danger  of  explosion  when  checking  and  charging  or  slave/

jump starting
These batteries -A- must be replaced.

– Switch off ignition and all electrical consumers.
– Check magic eye on batteries -A- with magic eye 

⇒ page 5

 .

– Switch on Midtronics -MCR340V- battery tester ⇒  operating

instructions for the Midtronics -MCR340V- battery tester.

– Connect red terminal clamp (+) to positive terminal of battery

-A- .

– Connect black terminal clamp (-) to negative terminal of bat‐

tery -A- .

Note

Ensure test clamps have a good contact!

– Select “In vehicle” or “Outside vehicle”.
– Select “Warranty test”.

Note

Use the print function of the Midtronics -MCR340- tester if the test

results are required for handling warranty applications.

– Select battery type (Standard or AGM).
– Make a note of the DIN value of the battery -A- as shown on

the battery sticker. If there is no DIN value on the sticker, make

a note of the SAE value.

– Enter DIN value in Midtronics -MCR340- tester and perform

battery test ⇒  Operating manual of Midtronics tester -

MCR340V- .

– If you are using SAE value, open the “Miscellaneous” menu

and change from “DIN” to “SAE” ⇒  Operating manual Mid‐

tronics tester -MCR340V- .

– Switch Midtronics -MCR340- tester off.

2. Checking battery A     

21

Note

Always use DIN value from battery sticker! Otherwise, test result

will be falsified.

2.6.3

Evaluation of test result

Results of battery test

Battery test results

Measures

Battery -A- OK

None

Good - charge

– Charge battery -A-

⇒ page 26

 .

Use Incharge

– Charge battery -A-

⇒ page 26

 .

Replace battery -A-

– Renew battery -A- ⇒  Elec‐

trical system; Rep. Gr.  27 .

Battery cell defective

– Renew battery -A- ⇒  Elec‐

trical system; Rep. Gr.  27 .

2.6.4

Dealing with problems Midtronics -

MCR340V-

Under certain circumstances, the display may show errors or

messages depending on the status of the tester.
The most frequent display messages are listed below, together

with suggested solutions.
For messages not listed here, please refer to ⇒  Operating manual

Midtronics -MCR340V- .

Display message

Measures

No display

– Check whether test clamps

of Midtronics -MCR340V-

battery tester are firmly con‐

nected to battery terminals.

– Check battery terminals are

tightened according to reg‐

ulations ⇒  Electrical sys‐

have corrosion.

– Charge battery -A-

⇒ page 26

 .

System noise

– Switch off all electrical con‐

sumers.

– Wait until all electrical loads

monitored by onboard sup‐

ply control unit -J519- have

switched off.

– Remove the ignition key.

– Disconnect any suspicious,

non-standard electrical

equipment from onboard

supply.

– Wait a few minutes and test again 

⇒ page 20

 .

22

If you have performed test at jump-start point and message does

not disappear, perform test directly on battery -A- .

2.7

Current draw test

WARNING

Do not test or charge batteries -A- whose magic eye is “col‐

ourless/light yellow”. Do not slave/jump start the vehicle!
Danger  of  explosion  when  checking  and  charging  or  slave/

jump starting
These batteries -A- must be replaced.

Ensure that the correct charging mode is set on the charger so

that the current draw test is not falsified.
♦ Battery charger -VAS 5095 A- 

⇒ page 27

 .

♦ Battery charger -VAS 5900- 

⇒ page 31

 .

♦ Battery charger -VAS 5903- 

⇒ page 43

 .

To quickly ascertain the condition of a discharged battery -A- , the

current draw test whilst charging will help to ascertain the condi‐

tion of a discharged battery -A- to establish whether the battery -

A- must be replaced or fully recharged.

Note

For battery tester with printer -VAS 6161- , the current draw test

must always be performed when the test result “Perform current

draw test” appears on the display.

The current draw test must be carried out when the test result with

battery tester with printer -VAS 5097 A- is as follows:
1 - Starting output sufficient
2 - Starting output poor
3 - Starting output very poor
4 - Cannot be tested – Charge battery -A- and repeat test
5 - Battery tester with printer -VAS 5097 A- does not switch on

(no LED, no printout)

Depending on the test result 

⇒ page 13

 of the battery tester with

printer -VAS 5097 A- , further procedures or tests may be required

before a final decision can be made on the condition of the battery.
Performing a current draw test whilst charging a battery -A- will

quickly establish whether a partly or fully discharged battery -A-

⇒ page 63

 can be recharged to return it to a serviceable condi‐

tion.
Test prerequisites
♦ Temperature of battery -A- must be at least 10 °C when the

battery is being charged.

♦ The battery charger must be able to output at least 30 A of

charge current as in the case of battery charger -VAS 5095

A- / battery charger -VAS 5900- / battery charger -VAS 5903- .

2. Checking battery A     

23

pick-up clamp ( 100 A pick-up clamp -VAS 5051B/7- ) when

battery charger -VAS 5095 A- is used for charging.

♦ Battery charger -VAS 5900- and battery charger -VAS 5903-

display the current draw.

Carry out following procedures:
– Connect battery -A- to battery charger and start charging proc‐

ess.

– Measure charge current of battery -A- after 5 minutes.
Test result
The charge current must be more than 10 % of the nominal ca‐

pacity 5 minutes after starting the charging sequence.
Example:
For a 60 Ah battery -A- , the charge current must the higher than

6 A five minutes after charging has been started.
– Fully charge battery -A- when the charge current is higher than

10 % of the nominal capacity.

– Perform battery load test after allowing battery -A- to rest for

two hours 

⇒ page 9

 .

If charge current is below 10% of rated capacity five minutes after

start of charging (example for a 60 Ah battery -A- : less than 6 A),

renew battery -A- ⇒  Electrical system; Rep. Gr.  27 . For guar‐

antee and ex-gratia cases, complete battery test sheet and keep

it with battery -A- .

2.8

Checking no-load voltage of battery -A-

(stock and stored vehicles)

WARNING

Danger of injury! Observe warning notices and safety regula‐

tions 

⇒ page 2

 !

Note

The no-load voltage test may only be carried out to assess the

condition of the battery -A- on stock and stored vehicles within

the framework of prescribed maintenance.

The no-load test is used as a criterion for assessing whether

a battery -A- on a stock or stored vehicle requires recharging

⇒  Maintenance tables “Service for stock and stored vehicles” .

Special tools and workshop equipment required

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