Required special tool:
- Suitable container for pouring distilled water.
- Cordless densimeter with pipette.
Required consumables:
If the electrolyte level is too low: distilled water.
Battery Inspection
Inspect the battery case for damage. If the housing is damaged, electrolyte may leak out and damage nearby parts. Replace a battery with a damaged casing as soon as possible.
Checking the strength of the battery mount
If the battery is loose, it may fail prematurely due to shaking. A loose battery can cause wire fires or electrical malfunctions. In addition, it reduces the safety of the car in a collision.
If the battery has a cover, squeeze the plate on the back of the cover and flip the cover forward.
Move the battery strongly in different directions.
If the battery is loose, tighten the securing bolt -5- of the retaining clip -6- to 25 Nm.
Attention: If the terminal at the positive pole of the battery is loose, then before tightening it, in order to avoid a short circuit, disconnect the ground wire from the battery. After tightening the positive wire terminal, reconnect the ground wire to the battery. Disconnecting the ground wire from the battery outlined here.
Move the terminals -1- and -3- at the battery poles in different directions and check the strength of their fastening, if necessary tighten the fastening nuts -2- and -4-.
If present, fold back the battery cover and secure.
Checking/replenishing the electrolyte level with distilled water
Battery with status indicator and sealed cell plugs (serial):
Attention: The battery status indicator -1- may be in different positions. To determine the electrolyte level from the indicator, depending on the circumstances, you need to unfasten the fuse holder.
The electrolyte level and the state of charge of the battery can be determined from the status indicator -1-. Illuminate the indicator with a flashlight, 3 color indications are possible:
- green - the battery has sufficient charge
- black color - the battery is not charged or charged too weakly
- colorless or yellow color - low electrolyte level, the level must be replenished with distilled water.
Note: If an air bubble gets under the status indicator, the color display may be distorted. In this case, before checking, it is easy to tap on the battery case with an object, for example, a screwdriver handle.
Caution: If the battery life is more than five years and the color indication of the status indicator is colorless, the battery must be replaced with a new one.
Safety instructions
Shine inside the battery only with a flashlight. Do not expose the battery to naked flames (lighter, match). Explosive!
Do not be near an open battery case with a burning cigarette.
Pouring distilled water:
- Switch off the ignition.
- Remove the film from the plugs of the elements.
- Remove battery plugs -2-, eg using tool HAZET 4650-3.
Note: in workshops, a filling container VAS 5045 is used to replenish the electrolyte level.
The design of the VW/SEAT filling tank fitting prevents overfilling of the battery cell and leakage of electrolyte. When the maximum electrolyte level is reached, the further flow of distilled water is automatically stopped.
If no special tool is available, add distilled water up to the upper MAX mark -arrow-.
If the electrolyte level is not clearly visible from the outside, pour distilled water up to the internal mark of the permissible level (plastic ledge) -1 -
Insert plugs and tighten.
Caution: Never add too much distilled water, otherwise the electrolyte may spill out and damage nearby parts. If the level is too high, excess electrolyte should be aspirated using a densimeter with a pipette.
Battery with status indicator and without cell plugs
Attention: For a battery without cell plugs, the charge and electrolyte level are checked in the same way as for a battery with cell plugs. First of all, if the electrolyte level is too low, when the color indication of the status indicator -1- is yellow or colorless, the battery must be replaced.
Note: The cover -2- is fitted after the battery has been filled at the factory. Do not remove the cover in any case, otherwise the battery will become unusable.
Battery without status indicator:
Checking/replenishing the electrolyte level with distilled water
Check the electrolyte level from the outside through the transparent plastic housing, see figure N02-0492. If the electrolyte level in any cell falls below the MIN·mark, replenish the level with distilled water.
Attention: If the electrolyte level is not clearly visible from the outside, remove the plugs and look into the cells, see figure N27-0242. Do not illuminate the battery with an open flame. Explosive! Use a flashlight.
Pouring distilled water:
- Switch off the ignition.
- Remove the film from the plugs of the elements.
- Pour distilled water separately into each element up to the MAX mark or to the internal mark of the permissible level (plastic ledge) -1-, see drawing N27-0242.
- Insert plugs and tighten.
Caution: Never add too much distilled water, otherwise the electrolyte may spill out and damage nearby parts. If the level is too high, excess electrolyte should be aspirated using a densimeter with a pipette.
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