Daewoo Nexia ignition switch, tips for repairing it

As in any car, the Daewoo Nexia has a combined unit that has anti-theft functions. Conventionally, it is called the ignition switch, although the structure of the unit is much more complex than a simple lock. The ignition switch controls electrical equipment, supplies power to it, and locks the steering column to prevent theft. Nevertheless, we all know a lot of cases when the legal owner cannot use the car - either the keys are lost, or there is a mechanical failure of the ignition switch assembly.

What will you need to repair the Daewoo Nexia ignition switch?

Replacing the ignition switch belongs to the category of light work . But the master must have a category of approval to work with electricians. Without at least the 3rd category of approval, it is better not to interfere with the ignition system yourself.

When working with a lock, we cannot do without:

Set of flathead screwdrivers (small screwdrivers needed)
Set of Phillips screwdrivers (small screwdrivers needed)
3 (mm) hexagon to press the cylinder lock

Also, you will need elements of the Daewoo Nexia . This is either a contact group or a larva. The necessary replacement components are determined during diagnostics . But a competent master should have both a cylinder and a contactor on hand. Sooner or later, the unclaimed part will still come in handy .

The technician should know that it is better not to skimp on the ignition switch. You should not buy the cheapest components marked “Made in China”. Such components become unusable very quickly.

This is interesting: The battery is dead - how to solve the problem with the help of another car, friends or alone

How to replace the ignition switch contact group on Nexia

Car brands that originated in South Korea are very popular in our country. Not only new items are relevant, but also used equipment. Among the popular cars is Daewoo Nexia.

One of the weak points of the car is the ignition switch area. Motorists on the forums note that all elements included in the unit have poor operational reliability. Relatively often, the contact group of the Daewoo Nexia ignition switch forces it to be replaced due to breakdowns. It is important to monitor the condition of the electrical unit, as it is responsible for trouble-free engine starting.

What is CG

Before replacing the ignition switch contact group on a Nexia, you need to know its internal condition and operational functionality. You need to look for the group in the area of the ignition switch. When you turn the key, the dashboard and electrical appliances connected to the on-board network are gradually put into operation. And at the extreme switching position, a signal is given to send voltage to the starter.

During the repair you will need:

flat, Phillips screwdrivers;
straight thin knitting needle or thick needle;
wrenches 10mm, 12mm.

Dismantling

First, you need to remove the old lock in order to install a technically sound one. This is done in several stages:

Start the work by removing the terminal from the battery using a ten key. Use a Phillips screwdriver to unscrew the screws securing the steering column casing. To access the top screws, turn the steering wheel. You can remove the steering wheel completely, but this is not necessary.
After removing the steering column trim, access to the electrical mechanism we need opens up. Before removing the ignition switch on the Daewoo Nexia, you should disconnect the contact group from it. Using a Phillips screwdriver, unscrew the fastening screw and, as carefully as possible, remove the contact group, which looks like two small rings.
Dismantle the cylinder: unscrew the fastening bolts from the lock using a screwdriver, knock it down with gentle blows.
When disassembling the structure, it is necessary to check the condition of the contact group, since the cause of the malfunction may be in it. In this case, replace the element.

When the faulty mechanism is removed, proceed to install the new one.

Installation

To insert a new lock on a Daewoo Nexia, you will have to perform a series of actions as during dismantling, but in the reverse order.

We install the lock on the seat and securely fix the bolts.
We connect the contact group to the lock using a screw.
We fix the steering column trim. Access to the upper holes of the mounting screws is possible by turning the steering wheel.
Screw on the battery terminal.

Summary

Before changing the ignition switch on a Daewoo Nexia, it is worth considering that some inconveniences may arise. It is impossible to use the same key to start the engine and open the doors or trunk. The old one will perform the function of opening the doors and trunk, and the new one will start the car. If you are not ready to use two different keys, then you should change all the locking mechanisms at once. This can also be done without outside intervention because the remaining locks are easier to dismantle.

The option of replacing the secret of a new lock is not always suitable. To do this, you need to be careful, and perhaps have technical knowledge: there is a high probability that during the dismantling process the plastic decorative ring will be damaged and the metal protective ring that secures the cylinder in the structure will be scratched.

The procedure is carried out as follows:

The key is inserted into the keyhole, turned as it unlocks, and pressed into the hole with a wire or knitting needle. When the larva reaches 5mm, remove it using improvised means. If you mix up the secrets, the electric mechanism will stop working.
The larva itself has a cotter pin secured by a spring. To pull it out, you need to press down and turn the key towards the ignition. The cotter pin is released from the clamps and flies out, as the spring acts on it.
It is now possible to configure the secret to match the old lock.

On a Daewoo Nexia, the ignition key opens the doors and trunk. Accordingly, when replacing the mechanism, this function will be lost. The driver will have to use two keys, which is not very convenient and often leads to confusion. The problem can be solved in two ways:

Purchasing a new set of cylinders for the ignition switch, doors and trunks and installing them in place of the old ones.
Replacing the damaged core (plug) of the lock with a new one while maintaining the old security mechanism.

The second option is possible if you can purchase original spare parts; the Chinese-made larvae are not included in the body, and it will not be possible to fit them. Sequence of actions for replacing the ignition switch:

Insert the key and turn it clockwise until it stops.
Using a screwdriver, a knitting needle or a piece of wire of a suitable size, we recess the latch; this will allow the cylinder to come out of the body by about 5 mm. When performing this action, you should be careful so that the spring-loaded part does not “fly out” of the socket and get lost.
We remove the core with the secrecy mechanism from the housing with extreme care.
Using the described method, we disassemble the new larva.

Subtleties of replacing the ignition switch of Daewoo Nexia and Matiz in whole and in parts

On any car, the ignition switch is an important component; if it is not working, starting the engine will be impossible. If a motorist is faced with the problem of a non-working device, there can be no other way out than replacing the contact group of the ignition switch of a Daewoo Nexia car. In this article we will consider in detail the replacement process with all the nuances.

Before we talk about how to remove and change the ignition cylinder or contact group on the lock of a Daewoo Nexia and Matiz car, we will briefly consider a theoretical issue. The manufacturer Daewoo, whose vehicles are quite common among domestic consumers, labels the ignition switch as a mechanical locking element equipped with a contact group. As practice shows, this component breaks down quite often and requires repair; this information is confirmed by motorists in numerous reviews on the Internet.

New contact group on Daewoo Nexia

If there is a need to repair or replace the ignition switch, contact group or cylinder on the Nexia or Matiz models, it is not at all necessary to pay money for this at the service. You just need to remove the device and disassemble it, and you will find basic repair recommendations below. But before that, let's figure out what are the causes and signs of device malfunction.

Causes of failure

All reasons for the failure of the ignition switch on Daewoo Matiz and Nexia cars are conventionally divided into two groups - electrical and mechanical. One of the main electrical reasons why a contact group or cylinder requires replacement and repair is overloading of the elements. As a result of the fact that the car owner equips his vehicle with additional electrical appliances and devices that consume more power, a voltage passes through the contact group for which it was not originally designed.

Accordingly, for a certain time, the metal of the group can withstand high current, but subsequently the device begins to become covered with soot, and it usually forms on top of the contact, but inside. As a result, it may be impossible to clean the contact group; in fact, just like repairing it, all that remains is to change it.

In order to prevent overloading of this element, it is necessary to connect all additional equipment only through a relay. In this case, the current will not be able to overload the devices and the group contacts will be intact. But it should be noted that the failure of the contact group is not always caused by the actions of the motorist; sometimes it is simply a factory defect. This problem is more relevant for VAZ cars than for Daewoo Nexia and Matiz, but nevertheless, their starter contact sometimes burns out.

Nexia ignition contact group

Another reason why a car owner is faced with the need for repairs is a short circuit in the vehicle’s electrical circuit. Usually this rarely happens, but sometimes it happens that a large current damages the contacts of the group and the device fails.

In addition to electrical ones, there are also mechanical causes of breakdowns, which also require repair of Daewoo Nexia and Matiz. One of the main mechanical reasons is wear of the contact tracks or the group contacts themselves, which inevitably leads to the replacement of elements.

This problem occurs as a result of the aging of the device as a whole, this is quite normal and expected, but sometimes the reason may be low-quality metal.

In practice, the wear of the group tracks on Daewoo Nexia and Matiz cars was recorded after five months of their operation. That is, the metal elements of the device wore out so much during this time that grooves began to appear on them. The element as a whole ceases to function normally, and when disassembling the ignition switch, a whole handful of metal shavings will most likely be found in it. It is impossible to repair such a malfunction; you only need to remove the lock and replace the contact group as a whole.

Ignition lock cylinder with key

Mechanical faults also include the breakage of the contacts themselves or other components of the group. For example, on some domestically produced cars, the starter contact is made in the form of an iron tongue, so every time you start the engine, this contact extends on top of the other and bends. Over time, the element simply breaks off or will not be able to press against the fixed contact of the device.

The next cause of mechanical breakdowns can be called a violation of the design of the entire group as a result of the device heating up. If the ignition switch as a whole gets hot, then this indicates an overload, which we mentioned earlier. The device heats up as a result of the large current passing through it. If the group housing is of low quality and made of plastic, then as a result of overheating, the contact tracks may move slightly, and accordingly, they will subsequently break off.

Signs of failure

One of the main signs of a malfunction of the cylinder or contact group of the ignition switch is the simultaneous inoperability of many elements of the electrical equipment system. This occurs as a result of the fact that a certain energy consumer or even several are connected inside the device through each individual contact. For example, the ignition can be used to power the low and high beam lights, parking lights, turn signals, rear traffic lights, radio or interior lighting.

It can also be various electronic devices, such as parking sensors, navigator, video recorder, etc. If a certain contact through which power is transferred to consumers burns out, it will not be possible to start this or that equipment (the author of the video on how to replace the lock cylinder is PRO.Garage).

When several devices break down, which, as it may seem, are in no way connected with each other, the cause of the breakdown almost always lies in the cylinder or contact group of the ignition switch. Of course, electrical equipment on Daewoo Nexia and Matiz cars can also be connected to the fuse box, and then in the event of a breakdown, first of all you need to check the fuse itself. In any case, everything is individual here.

Having analyzed the principle of operation of the cylinder and the contact group of these cars, it is possible to identify other signs of their malfunction, which will lead to the need for repair:

Starter failure. When you try to start the engine of a Daewoo Nexia car, you will not even hear the relay click, neither the control nor the relay. The absence of clicks is due to the lack of voltage that passes through the contact group.
Failure of electricity consumers, which, as it may seem, are in no way connected with each other. But all these consumers always operate in the same key position in the lock.
Another sign is if the devices were not working, and then suddenly start turning on when you try to move the key in the lock. It should be noted that the key must be in one position. As you can guess, the elements of the contact group can come into contact with undamaged surfaces and current can pass through them, but not for long (the author of the video about replacing the device with your own hands is Territory House).

Replacing the contact group

The car stops and turns off. The negative terminal from the battery is connected.
Remove the steering column trim (held on by 4 screws).

On the reverse side of the cylinder there is a wire block. Between it and the larva is our contact group.
Disconnect the wire block . We just pull it out. You can pry the block with a small flathead screwdriver and help pull it out.

The contact group is secured with a countersunk bolt. You need to unscrew it .

We take out the old contact group and install a new one .
We assemble the unit in reverse order.

Additional Information

It happens that the ignition switch fails while driving. Starting a Daewoo Nexia without using the ignition switch is quite possible . This is necessary in order to get to your garage or the nearest service center.

We put the car on the parking brake.
Let's engage neutral gear.
Turn the key to position 2.
Open the hood.
Using a piece of wire, we connect the positive terminal of the battery to the small terminal of the starter relay.
After the car starts, you need to turn the key to the first position and back to unlock the steering wheel.

It is worth noting that “traditional craftsmen” have become adept at transferring the secret from the old larva to the new one. This is done so that the old key can be used on the new lock cylinder.

This work belongs to the category of “jewelry” . Only a master with experience in such work can carefully remove and rearrange the old secretion into a new larva. It is better for a beginner not to do this in order to avoid unnecessary financial costs for purchasing an additional new larva. Of course, no one forbids getting your hands on old larvae .

Additional fuses for Daewoo Nexia

Nexia owners often equip their car with additional electrical equipment that is not installed as standard. When properly installed and connected, such devices are protected by additional fuses and relays directly in their electrical wiring.

So, for additional lighting devices and DRLs, the fuses are typically located in the engine compartment or under the dashboard. The electrical components of the seat heating system are most often located in the passenger compartment and to access them you need to disassemble the lower part of the center console or remove the tunnel lining in the area of the gearshift lever.

It should be remembered that connecting a large number of additional energy consumers can negatively affect battery charging and the operation of the machine's electrical system.

How to check and make repairs

Any car enthusiast can check the serviceability of the group of contacts in the ignition switch. Performance is determined by the appearance of the plastic case and the presence of carbon deposits on the contacts inside the group. To get to the part, it is enough to arm yourself with a Phillips and straight screwdriver.

We remove the plastic under the steering wheel, it is secured with screws.
First you need to remove the protective plastic under the steering wheel.
Disconnect the connector chip from the contact group.
The connector can be easily removed from the group of contacts with a simple screwdriver
Unscrew the small screw with a thin flat screwdriver. It secures a group of contacts in the ignition switch housing.
Using a thin flat screwdriver, unscrew the screw that secures the group in the ignition switch housing
Use a screwdriver to pry up the contact group and separate it from the ignition switch.
After dismantling, we carefully inspect the case, paying special attention to the contacts. If the plastic has melted near them, then it is necessary to replace the part with a new one.
We install the new spare part in the reverse order.

If the case is not damaged, be sure to inspect the internal contacts. To do this, carefully disassemble the case. If carbon deposits are found, remove it with a sharp knife or screwdriver. This temporary procedure will help along the way. As soon as possible, contact an electrician at a service station or replace the contact group yourself.

This is interesting: How to drive in the rain if the wipers don't work

Where is the starter relay located on the Daewoo Nexia?

Each Nexia owner should have a designation for relays and fuses. So that later you don’t have to search on the Internet and flip through books (someone has it)

The fuse and relay mounting block is located in the car interior on the left behind the instrument panel. ))

Electronic engine control unit. F2 [10 A] —

Dimensional lighting.
F3 [ Reserve ] F4 [ 20 A ] —
High beam headlights
F5 [ 10 A ] —
Low beam and electric corrector (left headlight)
F6 [ 10 A ] —
Low beam and electric corrector (right headlight)
F7 [ 30 A ] —
Fuel pump, injectors
F8 [20 A] -
Direction indicators (hazard warning lights), brake signals.
F9 [30 A] -
Windshield wiper and washer.
F10 [10 A] -
Electric drive of the fuel tank filler hatch cover
F11 [10 A] -
Air conditioning compressor relay.
F12 [30 A] -
Cooling system electric fan (low speed).
F13 [20 A] -
Instrument panel, digital clock, cigarette lighter, buzzer, rear lights, generator, heated rear window.
F14 [30 A] -
Sound signal, electric cooling fan (high speed).
F15 [20 A] -
Interior and luggage compartment lighting, electric antenna
F16 [30 A] -
Electric windows
F17 [10 A] -
Car radio (powered by the ignition switch)
F18 [30 A] -
Car radio (powered by batteries), electric heating rear window, electric trunk lid lock, central locking.
Fuses on the inside of the mounting block. F19 [ 30 A ] -
Air conditioning fan
F20 [ 30 A ] -
Fog lights

Relay-breaker for direction indicators and hazard warning lights. (2) —

Electric cooling fan (high speed).
(3) -
Fuel pump.
(4) —
Fog lights.
(5) —
Electric air conditioner fan (maximum speed).
(6) —
Intermittent wiper mode.
(7) —
Electrically heated rear window (with automatic shut-off function).
(8) —
Low beam headlights (when high beam is turned on).
(9) —
Sound signal.
(10) —
Air conditioning compressor.
(11) —
Electric cooling fan (low speed).
(12) —
Headlights.
(13) —
External lighting.
(14) —
Buzzer.

The Daewoo Nexia sedan is equipped with an electrical system with a negative contact (“ground”) to the car body. The standard voltage of the on-board network is 12 volts.

To protect the electrical equipment of the machine from short circuits or overloads, the main circuits are protected by fuses.

Nexia with an 8-valve engine and a 16-valve modification have identical electrical circuits.

The way fuses work is to open the electrical connection if a certain current is exceeded. In the event of an emergency electrical situation, the current-carrying fuse element is destroyed (blown), protecting electrical units from breakdown, and the car itself from possible fire.

Nexia uses flat blade (fork) type fuses, standard ATO size, 19 mm high. The rated current in amperes is marked on the top surface of each fuse. For ease of identification, fuses of different ratings have a specific body color, but not all manufacturers follow this rule.

Good to know…

Turn the cylinder, or rather its inner part, until the lock stops, press it with a screwdriver and disengage it. Be very careful when performing this procedure as the retainer and spring may come loose and become lost. There is also a locking tab on the opposite side of the larva; you should also keep an eye on it and protect it from loss.
By analogy, it is necessary to take the same actions with a new larva.
Compare the sizes of the secrets with each other.
If the secrets are the same, you can start replacing them. Change each secret in turn and make sure not to confuse the location of each of them; if the position of at least one is incorrect, the cylinder key will no longer turn.
If the secretions of the new larva differ in size, then you will have to replace it using one of the methods described earlier.

Rules for replacing fuses

To replace a blown fuse or a failed relay, you need to de-energize the corresponding circuit of the vehicle's electrical system (turn off the ignition or remove the terminal from the battery), open the mounting block and remove the faulty part from the terminals. For ease of use, some sets of fuses are equipped with special plastic pliers that facilitate dismantling.

You also need to remember a few rules that will help avoid damage to the electrical system of the Daewoo Nexia:

Eliminating the cause of burnout

It should be noted that replacing the contact group with a working one helps for a while. For high-quality repairs, it is necessary to eliminate the cause of burnout: reduce the current load on the contacts. You can strengthen the weak point of the Daewoo Nexia by installing additional relays according to the diagram:

When using two relays, the load on a group of contacts is halved

This method will help extend the service life of the contact group by more than 2 times. Anyone can improve the electrical ignition circuit of a Korean car.

Video: Replacing the contact group on the Daewoo Nexia

To fully understand the process of replacing a group of contacts in the Daewoo Nexia, watch the video:

Repairing the contact group on a Daewoo Nexia car yourself will not be particularly difficult. Additional difficulties will arise if the wiring needs to be replaced. The wires going to contacts “30” and “50” often melt. If possible, relieve the contact group. This will protect the car from fire and extend the life of the part.

Additional fuses for Daewoo Nexia

We are looking for a new Nexia ignition switch assembly

Ignition switch housing – spare part number 531318, 531320.

In this case, there is only one thing left - a complete replacement of the ignition switch assembly.

But first you need to make sure that the new lock you purchased is original or at least approved for use by the manufacturer. To do this, check the original catalog number. The Korean original ignition switch has an article number S6460010 . Daewoo can install locks from DAC, Daewoo, Onnuri (Wonil Korea). Each of these locks will have a single catalog article, and the price will be approximately the same - about 2,000 rubles.

Analogs

You can also buy analogues, both more expensive and cheaper than the original.

ARK lock for Nexia will cost 200 rubles less, and a CRB will cost a hundred more. They are also produced by the Turkish company Autotechteile, the quality of which has not yet been complained about. In short, there is plenty to choose from. All that remains is to remove the old lock and install a new one.